diff mbox series

[v6,11/11] media: uvcvideo: use dev_printk() for uvc_trace()

Message ID 20201222230446.1027916-12-ribalda@chromium.org
State New
Headers show
Series [v6,01/11] media: uvcvideo: Move guid to entity | expand

Commit Message

Ricardo Ribalda Dec. 22, 2020, 11:04 p.m. UTC 
Instead of calling prink() inside uvc_trace, use dev_printk(), which adds
context to the output.

Now that we are at it, regroup the strings so the messages can be easily
"grepable".

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
 drivers/media/usb/uvc/uvc_ctrl.c   |  66 ++++---
 drivers/media/usb/uvc/uvc_driver.c | 298 +++++++++++++++--------------
 drivers/media/usb/uvc/uvc_isight.c |  16 +-
 drivers/media/usb/uvc/uvc_queue.c  |   9 +-
 drivers/media/usb/uvc/uvc_status.c |  19 +-
 drivers/media/usb/uvc/uvc_v4l2.c   |  53 +++--
 drivers/media/usb/uvc/uvc_video.c  |  72 +++----
 drivers/media/usb/uvc/uvcvideo.h   |  11 +-
 8 files changed, 291 insertions(+), 253 deletions(-)

Comments

Joe Perches Dec. 23, 2020, 11:29 a.m. UTC | #1 
Perhaps this on top.

trace isn't a good name as it's not a trace mechanism, it is a
typical debug mechanism.

Rename uvc_trace/uvc_trace_cont macros to uvc_dbg/uvc_dbg_cont.
Rename uvc_trace_param to uvc_dbg_param
Rename UVC_TRACE_<FOO> defines to UVC_DBG_<FOO>
Use ## concatenation in uvc_dbg macros to avoid overly long and
repetitive UVC_DBG uses
---
 drivers/media/usb/uvc/uvc_ctrl.c   |  81 +++++----
 drivers/media/usb/uvc/uvc_driver.c | 343 ++++++++++++++++++-------------------
 drivers/media/usb/uvc/uvc_isight.c |  17 +-
 drivers/media/usb/uvc/uvc_queue.c  |   4 +-
 drivers/media/usb/uvc/uvc_status.c |  29 ++--
 drivers/media/usb/uvc/uvc_v4l2.c   |  55 +++---
 drivers/media/usb/uvc/uvc_video.c  | 120 +++++++------
 drivers/media/usb/uvc/uvcvideo.h   |  34 ++--
 8 files changed, 331 insertions(+), 352 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index bf448c213c53..7b70877b2483 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -906,8 +906,8 @@ static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
 	}
 
 	if (ctrl == NULL && !next)
-		uvc_trace(chain->dev, UVC_TRACE_CONTROL,
-			  "Control 0x%08x not found.\n", v4l2_id);
+		uvc_dbg(chain->dev, CONTROL, "Control 0x%08x not found\n",
+			v4l2_id);
 
 	return ctrl;
 }
@@ -1820,9 +1820,9 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
 	ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum,
 			     info->selector, data, 2);
 	if (ret < 0) {
-		uvc_trace(dev, UVC_TRACE_CONTROL,
-			  "GET_LEN failed on control %pUl/%u (%d).\n",
-			  info->entity, info->selector, ret);
+		uvc_dbg(dev, CONTROL,
+			"GET_LEN failed on control %pUl/%u (%d)\n",
+			info->entity, info->selector, ret);
 		goto done;
 	}
 
@@ -1833,20 +1833,20 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
 
 	ret = uvc_ctrl_get_flags(dev, ctrl, info);
 	if (ret < 0) {
-		uvc_trace(dev, UVC_TRACE_CONTROL,
-			  "Failed to get flags for control %pUl/%u (%d).\n",
-			  info->entity, info->selector, ret);
+		uvc_dbg(dev, CONTROL,
+			"Failed to get flags for control %pUl/%u (%d)\n",
+			info->entity, info->selector, ret);
 		goto done;
 	}
 
 	uvc_ctrl_fixup_xu_info(dev, ctrl, info);
 
-	uvc_trace(dev, UVC_TRACE_CONTROL,
-		  "XU control %pUl/%u queried: len %u, flags { get %u set %u auto %u }.\n",
-		  info->entity, info->selector, info->size,
-		  (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
-		  (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
-		  (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);
+	uvc_dbg(dev, CONTROL,
+		"XU control %pUl/%u queried: len %u, flags { get %u set %u auto %u }\n",
+		info->entity, info->selector, info->size,
+		(info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
+		(info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
+		(info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);
 
 done:
 	kfree(data);
@@ -1871,10 +1871,10 @@ static int uvc_ctrl_init_xu_ctrl(struct uvc_device *dev,
 
 	ret = uvc_ctrl_add_info(dev, ctrl, &info);
 	if (ret < 0)
-		uvc_trace(dev, UVC_TRACE_CONTROL,
-			  "Failed to initialize control %pUl/%u on device %s entity %u\n",
-			  info.entity, info.selector, dev->udev->devpath,
-			  ctrl->entity->id);
+		uvc_dbg(dev, CONTROL,
+			"Failed to initialize control %pUl/%u on device %s entity %u\n",
+			info.entity, info.selector, dev->udev->devpath,
+			ctrl->entity->id);
 
 	return ret;
 }
@@ -1902,8 +1902,8 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
 	}
 
 	if (!found) {
-		uvc_trace(chain->dev, UVC_TRACE_CONTROL,
-			  "Extension unit %u not found.\n", xqry->unit);
+		uvc_dbg(chain->dev, CONTROL, "Extension unit %u not found\n",
+			xqry->unit);
 		return -ENOENT;
 	}
 
@@ -1918,9 +1918,8 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
 	}
 
 	if (!found) {
-		uvc_trace(chain->dev, UVC_TRACE_CONTROL,
-			  "Control %pUl/%u not found.\n", entity->guid,
-			  xqry->selector);
+		uvc_dbg(chain->dev, CONTROL, "Control %pUl/%u not found\n",
+			entity->guid, xqry->selector);
 		return -ENOENT;
 	}
 
@@ -2068,10 +2067,9 @@ static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,
 
 	ctrl->initialized = 1;
 
-	uvc_trace(dev, UVC_TRACE_CONTROL,
-		  "Added control %pUl/%u to device %s entity %u\n",
-		  ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,
-		  ctrl->entity->id);
+	uvc_dbg(dev, CONTROL, "Added control %pUl/%u to device %s entity %u\n",
+		ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,
+		ctrl->entity->id);
 
 	return 0;
 }
@@ -2108,9 +2106,8 @@ static int __uvc_ctrl_add_mapping(struct uvc_device *dev,
 		map->set = uvc_set_le_value;
 
 	list_add_tail(&map->list, &ctrl->info.mappings);
-	uvc_trace(dev, UVC_TRACE_CONTROL,
-		  "Adding mapping '%s' to control %pUl/%u.\n",
-		  map->name, ctrl->info.entity, ctrl->info.selector);
+	uvc_dbg(dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",
+		map->name, ctrl->info.entity, ctrl->info.selector);
 
 	return 0;
 }
@@ -2126,9 +2123,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 	int ret;
 
 	if (mapping->id & ~V4L2_CTRL_ID_MASK) {
-		uvc_trace(dev, UVC_TRACE_CONTROL,
-			  "Can't add mapping '%s', control id 0x%08x is invalid.\n",
-			  mapping->name, mapping->id);
+		uvc_dbg(dev, CONTROL,
+			"Can't add mapping '%s', control id 0x%08x is invalid\n",
+			mapping->name, mapping->id);
 		return -EINVAL;
 	}
 
@@ -2173,9 +2170,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 
 	list_for_each_entry(map, &ctrl->info.mappings, list) {
 		if (mapping->id == map->id) {
-			uvc_trace(dev, UVC_TRACE_CONTROL,
-				  "Can't add mapping '%s', control id 0x%08x already exists.\n",
-				  mapping->name, mapping->id);
+			uvc_dbg(dev, CONTROL,
+				"Can't add mapping '%s', control id 0x%08x already exists\n",
+				mapping->name, mapping->id);
 			ret = -EEXIST;
 			goto done;
 		}
@@ -2184,9 +2181,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 	/* Prevent excess memory consumption */
 	if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) {
 		atomic_dec(&dev->nmappings);
-		uvc_trace(dev, UVC_TRACE_CONTROL,
-			  "Can't add mapping '%s', maximum mappings count (%u) exceeded.\n",
-			  mapping->name, UVC_MAX_CONTROL_MAPPINGS);
+		uvc_dbg(dev, CONTROL,
+			"Can't add mapping '%s', maximum mappings count (%u) exceeded\n",
+			mapping->name, UVC_MAX_CONTROL_MAPPINGS);
 		ret = -ENOMEM;
 		goto done;
 	}
@@ -2255,9 +2252,9 @@ static void uvc_ctrl_prune_entity(struct uvc_device *dev,
 		    !uvc_test_bit(controls, blacklist[i].index))
 			continue;
 
-		uvc_trace(dev, UVC_TRACE_CONTROL,
-			  "%u/%u control is black listed, removing it.\n",
-			  entity->id, blacklist[i].index);
+		uvc_dbg(dev, CONTROL,
+			"%u/%u control is black listed, removing it\n",
+			entity->id, blacklist[i].index);
 
 		uvc_clear_bit(controls, blacklist[i].index);
 	}
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 1f72bda6036e..2dbed5c3831a 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -33,7 +33,7 @@ unsigned int uvc_clock_param = CLOCK_MONOTONIC;
 unsigned int uvc_hw_timestamps_param;
 unsigned int uvc_no_drop_param;
 static unsigned int uvc_quirks_param = -1;
-unsigned int uvc_trace_param;
+unsigned int uvc_dbg_param;
 unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;
 
 /* ------------------------------------------------------------------------
@@ -521,10 +521,10 @@ static int uvc_parse_format(struct uvc_device *dev,
 	case UVC_VS_FORMAT_FRAME_BASED:
 		n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
 		if (buflen < n) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videostreaming interface %d FORMAT error\n",
-				  dev->udev->devnum,
-				  alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videostreaming interface %d FORMAT error\n",
+				dev->udev->devnum,
+				alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -585,10 +585,10 @@ static int uvc_parse_format(struct uvc_device *dev,
 
 	case UVC_VS_FORMAT_MJPEG:
 		if (buflen < 11) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videostreaming interface %d FORMAT error\n",
-				  dev->udev->devnum,
-				  alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videostreaming interface %d FORMAT error\n",
+				dev->udev->devnum,
+				alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -601,10 +601,10 @@ static int uvc_parse_format(struct uvc_device *dev,
 
 	case UVC_VS_FORMAT_DV:
 		if (buflen < 9) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videostreaming interface %d FORMAT error\n",
-				  dev->udev->devnum,
-				  alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videostreaming interface %d FORMAT error\n",
+				dev->udev->devnum,
+				alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -619,10 +619,10 @@ static int uvc_parse_format(struct uvc_device *dev,
 			strscpy(format->name, "HD-DV", sizeof(format->name));
 			break;
 		default:
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videostreaming interface %d: unknown DV format %u\n",
-				  dev->udev->devnum,
-			       alts->desc.bInterfaceNumber, buffer[8]);
+			uvc_dbg(dev, DESCR,
+				"device %d videostreaming interface %d: unknown DV format %u\n",
+				dev->udev->devnum,
+				alts->desc.bInterfaceNumber, buffer[8]);
 			return -EINVAL;
 		}
 
@@ -648,14 +648,14 @@ static int uvc_parse_format(struct uvc_device *dev,
 	case UVC_VS_FORMAT_STREAM_BASED:
 		/* Not supported yet. */
 	default:
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "device %d videostreaming interface %d unsupported format %u\n",
-			  dev->udev->devnum, alts->desc.bInterfaceNumber,
-			  buffer[2]);
+		uvc_dbg(dev, DESCR,
+			"device %d videostreaming interface %d unsupported format %u\n",
+			dev->udev->devnum, alts->desc.bInterfaceNumber,
+			buffer[2]);
 		return -EINVAL;
 	}
 
-	uvc_trace(dev, UVC_TRACE_DESCR, "Found format %s.\n", format->name);
+	uvc_dbg(dev, DESCR, "Found format %s\n", format->name);
 
 	buflen -= buffer[0];
 	buffer += buffer[0];
@@ -674,10 +674,10 @@ static int uvc_parse_format(struct uvc_device *dev,
 		n = n ? n : 3;
 
 		if (buflen < 26 + 4*n) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videostreaming interface %d FRAME error\n",
-				  dev->udev->devnum,
-				  alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videostreaming interface %d FRAME error\n",
+				dev->udev->devnum,
+				alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -739,10 +739,10 @@ static int uvc_parse_format(struct uvc_device *dev,
 				frame->dwDefaultFrameInterval;
 		}
 
-		uvc_trace(dev, UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
-			  frame->wWidth, frame->wHeight,
-			  10000000 / frame->dwDefaultFrameInterval,
-			  (100000000 / frame->dwDefaultFrameInterval) % 10);
+		uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",
+			frame->wWidth, frame->wHeight,
+			10000000 / frame->dwDefaultFrameInterval,
+			(100000000 / frame->dwDefaultFrameInterval) % 10);
 
 		format->nframes++;
 		buflen -= buffer[0];
@@ -758,10 +758,10 @@ static int uvc_parse_format(struct uvc_device *dev,
 	if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
 	    buffer[2] == UVC_VS_COLORFORMAT) {
 		if (buflen < 6) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videostreaming interface %d COLORFORMAT error\n",
-				  dev->udev->devnum,
-				  alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videostreaming interface %d COLORFORMAT error\n",
+				dev->udev->devnum,
+				alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -793,18 +793,18 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 
 	if (intf->cur_altsetting->desc.bInterfaceSubClass
 		!= UVC_SC_VIDEOSTREAMING) {
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "device %d interface %d isn't a video streaming interface\n",
-			  dev->udev->devnum,
-			  intf->altsetting[0].desc.bInterfaceNumber);
+		uvc_dbg(dev, DESCR,
+			"device %d interface %d isn't a video streaming interface\n",
+			dev->udev->devnum,
+			intf->altsetting[0].desc.bInterfaceNumber);
 		return -EINVAL;
 	}
 
 	if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "device %d interface %d is already claimed\n",
-			  dev->udev->devnum,
-			  intf->altsetting[0].desc.bInterfaceNumber);
+		uvc_dbg(dev, DESCR,
+			"device %d interface %d is already claimed\n",
+			dev->udev->devnum,
+			intf->altsetting[0].desc.bInterfaceNumber);
 		return -EINVAL;
 	}
 
@@ -826,9 +826,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 
 			if (ep->extralen > 2 &&
 			    ep->extra[1] == USB_DT_CS_INTERFACE) {
-				uvc_trace(dev, UVC_TRACE_DESCR,
-					  "trying extra data from endpoint %u.\n",
-					  i);
+				uvc_dbg(dev, DESCR,
+					"trying extra data from endpoint %u\n",
+					i);
 				buffer = alts->endpoint[i].extra;
 				buflen = alts->endpoint[i].extralen;
 				break;
@@ -843,8 +843,8 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 	}
 
 	if (buflen <= 2) {
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "no class-specific streaming interface descriptors found.\n");
+		uvc_dbg(dev, DESCR,
+			"no class-specific streaming interface descriptors found\n");
 		goto error;
 	}
 
@@ -861,9 +861,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 		break;
 
 	default:
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "device %d videostreaming interface %d HEADER descriptor not found.\n",
-			  dev->udev->devnum, alts->desc.bInterfaceNumber);
+		uvc_dbg(dev, DESCR,
+			"device %d videostreaming interface %d HEADER descriptor not found\n",
+			dev->udev->devnum, alts->desc.bInterfaceNumber);
 		goto error;
 	}
 
@@ -871,9 +871,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 	n = buflen >= size ? buffer[size-1] : 0;
 
 	if (buflen < size + p*n) {
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "device %d videostreaming interface %d HEADER descriptor is invalid.\n",
-			  dev->udev->devnum, alts->desc.bInterfaceNumber);
+		uvc_dbg(dev, DESCR,
+			"device %d videostreaming interface %d HEADER descriptor is invalid\n",
+			dev->udev->devnum, alts->desc.bInterfaceNumber);
 		goto error;
 	}
 
@@ -923,10 +923,10 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 
 		case UVC_VS_FORMAT_MPEG2TS:
 		case UVC_VS_FORMAT_STREAM_BASED:
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videostreaming interface %d FORMAT %u is not supported.\n",
-				  dev->udev->devnum,
-				  alts->desc.bInterfaceNumber, _buffer[2]);
+			uvc_dbg(dev, DESCR,
+				"device %d videostreaming interface %d FORMAT %u is not supported\n",
+				dev->udev->devnum,
+				alts->desc.bInterfaceNumber, _buffer[2]);
 			break;
 
 		case UVC_VS_FRAME_UNCOMPRESSED:
@@ -948,9 +948,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 	}
 
 	if (nformats == 0) {
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "device %d videostreaming interface %d has no supported formats defined.\n",
-			  dev->udev->devnum, alts->desc.bInterfaceNumber);
+		uvc_dbg(dev, DESCR,
+			"device %d videostreaming interface %d has no supported formats defined\n",
+			dev->udev->devnum, alts->desc.bInterfaceNumber);
 		goto error;
 	}
 
@@ -997,10 +997,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 	}
 
 	if (buflen)
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage.\n",
-			  dev->udev->devnum, alts->desc.bInterfaceNumber,
-			  buflen);
+		uvc_dbg(dev, DESCR,
+			"device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n",
+			dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
 
 	/* Parse the alternate settings to find the maximum bandwidth. */
 	for (i = 0; i < intf->num_altsetting; ++i) {
@@ -1133,9 +1132,9 @@ static int uvc_parse_vendor_control(struct uvc_device *dev,
 		n = buflen >= 25 + p ? buffer[22+p] : 0;
 
 		if (buflen < 25 + p + 2*n) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d EXTENSION_UNIT error\n",
-				  udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d EXTENSION_UNIT error\n",
+				udev->devnum, alts->desc.bInterfaceNumber);
 			break;
 		}
 
@@ -1182,9 +1181,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		n = buflen >= 12 ? buffer[11] : 0;
 
 		if (buflen < 12 + n) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d HEADER error\n",
-				  udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d HEADER error\n",
+				udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1195,9 +1194,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		for (i = 0; i < n; ++i) {
 			intf = usb_ifnum_to_if(udev, buffer[12+i]);
 			if (intf == NULL) {
-				uvc_trace(dev, UVC_TRACE_DESCR,
-					  "device %d interface %d doesn't exists\n",
-					  udev->devnum, i);
+				uvc_dbg(dev, DESCR,
+					"device %d interface %d doesn't exists\n",
+					udev->devnum, i);
 				continue;
 			}
 
@@ -1207,9 +1206,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 
 	case UVC_VC_INPUT_TERMINAL:
 		if (buflen < 8) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d INPUT_TERMINAL error\n",
-				  udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d INPUT_TERMINAL error\n",
+				udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1226,10 +1225,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		 */
 		type = get_unaligned_le16(&buffer[4]);
 		if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
-				  udev->devnum, alts->desc.bInterfaceNumber,
-				  buffer[3], type);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
+				udev->devnum, alts->desc.bInterfaceNumber,
+				buffer[3], type);
 			return 0;
 		}
 
@@ -1248,9 +1247,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		}
 
 		if (buflen < len + n + p) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d INPUT_TERMINAL error\n",
-				  udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d INPUT_TERMINAL error\n",
+				udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1295,9 +1294,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 
 	case UVC_VC_OUTPUT_TERMINAL:
 		if (buflen < 9) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
-				  udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
+				udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1306,10 +1305,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		 */
 		type = get_unaligned_le16(&buffer[4]);
 		if ((type & 0xff00) == 0) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
-				  udev->devnum, alts->desc.bInterfaceNumber,
-				  buffer[3], type);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
+				udev->devnum, alts->desc.bInterfaceNumber,
+				buffer[3], type);
 			return 0;
 		}
 
@@ -1333,9 +1332,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		p = buflen >= 5 ? buffer[4] : 0;
 
 		if (buflen < 5 || buflen < 6 + p) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d SELECTOR_UNIT error\n",
-				  udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d SELECTOR_UNIT error\n",
+				udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1359,9 +1358,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		p = dev->uvc_version >= 0x0110 ? 10 : 9;
 
 		if (buflen < p + n) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d PROCESSING_UNIT error\n",
-				  udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d PROCESSING_UNIT error\n",
+				udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1392,9 +1391,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		n = buflen >= 24 + p ? buffer[22+p] : 0;
 
 		if (buflen < 24 + p + n) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "device %d videocontrol interface %d EXTENSION_UNIT error\n",
-				  udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_dbg(dev, DESCR,
+				"device %d videocontrol interface %d EXTENSION_UNIT error\n",
+				udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1419,9 +1418,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 		break;
 
 	default:
-		uvc_trace(dev, UVC_TRACE_DESCR,
-			  "Found an unknown CS_INTERFACE descriptor (%u)\n",
-			  buffer[2]);
+		uvc_dbg(dev, DESCR,
+			"Found an unknown CS_INTERFACE descriptor (%u)\n",
+			buffer[2]);
 		break;
 	}
 
@@ -1466,9 +1465,9 @@ static int uvc_parse_control(struct uvc_device *dev)
 		if (usb_endpoint_is_int_in(desc) &&
 		    le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
 		    desc->bInterval != 0) {
-			uvc_trace(dev, UVC_TRACE_DESCR,
-				  "Found a Status endpoint (addr %02x).\n",
-				  desc->bEndpointAddress);
+			uvc_dbg(dev, DESCR,
+				"Found a Status endpoint (addr %02x)\n",
+				desc->bEndpointAddress);
 			dev->int_ep = ep;
 		}
 	}
@@ -1652,23 +1651,23 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
 {
 	switch (UVC_ENTITY_TYPE(entity)) {
 	case UVC_VC_EXTENSION_UNIT:
-		uvc_trace_cont(UVC_TRACE_PROBE, " <- XU %d", entity->id);
+		uvc_dbg_cont(PROBE, " <- XU %d", entity->id);
 
 		if (entity->bNrInPins != 1) {
-			uvc_trace(chain->dev, UVC_TRACE_DESCR,
-				  "Extension unit %d has more than 1 input pin.\n",
-				  entity->id);
+			uvc_dbg(chain->dev, DESCR,
+				"Extension unit %d has more than 1 input pin\n",
+				entity->id);
 			return -1;
 		}
 
 		break;
 
 	case UVC_VC_PROCESSING_UNIT:
-		uvc_trace_cont(UVC_TRACE_PROBE, " <- PU %d", entity->id);
+		uvc_dbg_cont(PROBE, " <- PU %d", entity->id);
 
 		if (chain->processing != NULL) {
-			uvc_trace(chain->dev, UVC_TRACE_DESCR,
-				  "Found multiple Processing Units in chain.\n");
+			uvc_dbg(chain->dev, DESCR,
+				"Found multiple Processing Units in chain\n");
 			return -1;
 		}
 
@@ -1676,15 +1675,15 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
 		break;
 
 	case UVC_VC_SELECTOR_UNIT:
-		uvc_trace_cont(UVC_TRACE_PROBE, " <- SU %d", entity->id);
+		uvc_dbg_cont(PROBE, " <- SU %d", entity->id);
 
 		/* Single-input selector units are ignored. */
 		if (entity->bNrInPins == 1)
 			break;
 
 		if (chain->selector != NULL) {
-			uvc_trace(chain->dev, UVC_TRACE_DESCR,
-				  "Found multiple Selector Units in chain.\n");
+			uvc_dbg(chain->dev, DESCR,
+				"Found multiple Selector Units in chain\n");
 			return -1;
 		}
 
@@ -1694,29 +1693,29 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
 	case UVC_ITT_VENDOR_SPECIFIC:
 	case UVC_ITT_CAMERA:
 	case UVC_ITT_MEDIA_TRANSPORT_INPUT:
-		uvc_trace_cont(UVC_TRACE_PROBE, " <- IT %d\n", entity->id);
+		uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
 
 		break;
 
 	case UVC_OTT_VENDOR_SPECIFIC:
 	case UVC_OTT_DISPLAY:
 	case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
-		uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", entity->id);
+		uvc_dbg_cont(PROBE, " OT %d", entity->id);
 
 		break;
 
 	case UVC_TT_STREAMING:
 		if (UVC_ENTITY_IS_ITERM(entity))
-			uvc_trace_cont(UVC_TRACE_PROBE, " <- IT %d\n", entity->id);
+			uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);
 		else
-			uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", entity->id);
+			uvc_dbg_cont(PROBE, " OT %d", entity->id);
 
 		break;
 
 	default:
-		uvc_trace(chain->dev, UVC_TRACE_DESCR,
-			  "Unsupported entity type 0x%04x found in chain.\n",
-			  UVC_ENTITY_TYPE(entity));
+		uvc_dbg(chain->dev, DESCR,
+			"Unsupported entity type 0x%04x found in chain\n",
+			UVC_ENTITY_TYPE(entity));
 		return -1;
 	}
 
@@ -1742,26 +1741,26 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
 		if (forward == prev)
 			continue;
 		if (forward->chain.next || forward->chain.prev) {
-			uvc_trace(chain->dev, UVC_TRACE_DESCR,
-				  "Found reference to entity %d already in chain.\n",
-				  forward->id);
+			uvc_dbg(chain->dev, DESCR,
+				"Found reference to entity %d already in chain\n",
+				forward->id);
 			return -EINVAL;
 		}
 
 		switch (UVC_ENTITY_TYPE(forward)) {
 		case UVC_VC_EXTENSION_UNIT:
 			if (forward->bNrInPins != 1) {
-				uvc_trace(chain->dev, UVC_TRACE_DESCR,
-					  "Extension unit %d has more than 1 input pin.\n",
-					  entity->id);
+				uvc_dbg(chain->dev, DESCR,
+					"Extension unit %d has more than 1 input pin\n",
+					entity->id);
 				return -EINVAL;
 			}
 
 			list_add_tail(&forward->chain, &chain->entities);
 			if (!found)
-				uvc_trace_cont(UVC_TRACE_PROBE, " (->");
+				uvc_dbg_cont(PROBE, " (->");
 
-			uvc_trace_cont(UVC_TRACE_PROBE, " XU %d", forward->id);
+			uvc_dbg_cont(PROBE, " XU %d", forward->id);
 			found = 1;
 			break;
 
@@ -1770,23 +1769,23 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
 		case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
 		case UVC_TT_STREAMING:
 			if (UVC_ENTITY_IS_ITERM(forward)) {
-				uvc_trace(chain->dev, UVC_TRACE_DESCR,
-					  "Unsupported input terminal %u.\n",
-					  forward->id);
+				uvc_dbg(chain->dev, DESCR,
+					"Unsupported input terminal %u\n",
+					forward->id);
 				return -EINVAL;
 			}
 
 			list_add_tail(&forward->chain, &chain->entities);
 			if (!found)
-				uvc_trace_cont(UVC_TRACE_PROBE, " (->");
+				uvc_dbg_cont(PROBE, " (->");
 
-			uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", forward->id);
+			uvc_dbg_cont(PROBE, " OT %d", forward->id);
 			found = 1;
 			break;
 		}
 	}
 	if (found)
-		uvc_trace_cont(UVC_TRACE_PROBE, ")");
+		uvc_dbg_cont(PROBE, ")");
 
 	return 0;
 }
@@ -1811,33 +1810,33 @@ static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
 			break;
 		}
 
-		uvc_trace_cont(UVC_TRACE_PROBE, " <- IT");
+		uvc_dbg_cont(PROBE, " <- IT");
 
 		chain->selector = entity;
 		for (i = 0; i < entity->bNrInPins; ++i) {
 			id = entity->baSourceID[i];
 			term = uvc_entity_by_id(chain->dev, id);
 			if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
-				uvc_trace(chain->dev, UVC_TRACE_DESCR,
-					  "Selector unit %d input %d isn't connected to an input terminal\n",
-					  entity->id, i);
+				uvc_dbg(chain->dev, DESCR,
+					"Selector unit %d input %d isn't connected to an input terminal\n",
+					entity->id, i);
 				return -1;
 			}
 
 			if (term->chain.next || term->chain.prev) {
-				uvc_trace(chain->dev, UVC_TRACE_DESCR,
-					  "Found reference to entity %d already in chain.\n",
-					  term->id);
+				uvc_dbg(chain->dev, DESCR,
+					"Found reference to entity %d already in chain\n",
+					term->id);
 				return -EINVAL;
 			}
 
-			uvc_trace_cont(UVC_TRACE_PROBE, " %d", term->id);
+			uvc_dbg_cont(PROBE, " %d", term->id);
 
 			list_add_tail(&term->chain, &chain->entities);
 			uvc_scan_chain_forward(chain, term, entity);
 		}
 
-		uvc_trace_cont(UVC_TRACE_PROBE, "\n");
+		uvc_dbg_cont(PROBE, "\n");
 
 		id = 0;
 		break;
@@ -1860,8 +1859,8 @@ static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
 
 	entity = uvc_entity_by_id(chain->dev, id);
 	if (entity == NULL) {
-		uvc_trace(chain->dev, UVC_TRACE_DESCR,
-			  "Found reference to unknown entity %d.\n", id);
+		uvc_dbg(chain->dev, DESCR,
+			"Found reference to unknown entity %d\n", id);
 		return -EINVAL;
 	}
 
@@ -1874,7 +1873,7 @@ static int uvc_scan_chain(struct uvc_video_chain *chain,
 {
 	struct uvc_entity *entity, *prev;
 
-	uvc_trace(chain->dev, UVC_TRACE_PROBE, "Scanning UVC chain:");
+	uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");
 
 	entity = term;
 	prev = NULL;
@@ -1882,9 +1881,9 @@ static int uvc_scan_chain(struct uvc_video_chain *chain,
 	while (entity != NULL) {
 		/* Entity must not be part of an existing chain */
 		if (entity->chain.next || entity->chain.prev) {
-			uvc_trace(chain->dev, UVC_TRACE_DESCR,
-				  "Found reference to entity %d already in chain.\n",
-				  entity->id);
+			uvc_dbg(chain->dev, DESCR,
+				"Found reference to entity %d already in chain\n",
+				entity->id);
 			return -EINVAL;
 		}
 
@@ -2038,9 +2037,8 @@ static int uvc_scan_fallback(struct uvc_device *dev)
 
 	list_add_tail(&chain->list, &dev->chains);
 
-	uvc_trace(dev, UVC_TRACE_PROBE,
-		  "Found a video chain by fallback heuristic (%s).\n",
-		  uvc_print_chain(chain));
+	uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n",
+		uvc_print_chain(chain));
 
 	return 0;
 
@@ -2082,9 +2080,8 @@ static int uvc_scan_device(struct uvc_device *dev)
 			continue;
 		}
 
-		uvc_trace(dev, UVC_TRACE_PROBE,
-			  "Found a valid video chain (%s).\n",
-			  uvc_print_chain(chain));
+		uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",
+			uvc_print_chain(chain));
 
 		list_add_tail(&chain->list, &dev->chains);
 	}
@@ -2384,12 +2381,11 @@ static int uvc_probe(struct usb_interface *intf,
 		    ? dev->info->quirks : uvc_quirks_param;
 
 	if (id->idVendor && id->idProduct)
-		uvc_trace(dev, UVC_TRACE_PROBE,
-			  "Probing known UVC device %s (%04x:%04x)\n",
-			  udev->devpath, id->idVendor, id->idProduct);
+		uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n",
+			udev->devpath, id->idVendor, id->idProduct);
 	else
-		uvc_trace(dev, UVC_TRACE_PROBE,
-			  "Probing generic UVC device %s\n", udev->devpath);
+		uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",
+			udev->devpath);
 
 	if (udev->product != NULL)
 		strscpy(dev->name, udev->product, sizeof(dev->name));
@@ -2433,14 +2429,13 @@ static int uvc_probe(struct usb_interface *intf,
 
 	/* Parse the Video Class control descriptor. */
 	if (uvc_parse_control(dev) < 0) {
-		uvc_trace(dev, UVC_TRACE_PROBE,
-			  "Unable to parse UVC descriptors.\n");
+		uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
 		goto error;
 	}
 
 	/* Parse the associated GPIOs. */
 	if (uvc_gpio_parse(dev) < 0) {
-		uvc_trace(dev, UVC_TRACE_PROBE, "Unable to parse UVC GPIOs\n");
+		uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n");
 		goto error;
 	}
 
@@ -2495,7 +2490,7 @@ static int uvc_probe(struct usb_interface *intf,
 			 "Unable to request privacy GPIO IRQ %d. Continuing without privacy events\n",
 			 ret);
 
-	uvc_trace(dev, UVC_TRACE_PROBE, "UVC device initialized.\n");
+	uvc_dbg(dev, PROBE, "UVC device initialized\n");
 	usb_enable_autosuspend(udev);
 	return 0;
 
@@ -2527,7 +2522,7 @@ static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
 	struct uvc_device *dev = usb_get_intfdata(intf);
 	struct uvc_streaming *stream;
 
-	uvc_trace(dev, UVC_TRACE_SUSPEND, "Suspending interface %u\n",
+	uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",
 		intf->cur_altsetting->desc.bInterfaceNumber);
 
 	/* Controls are cached on the fly so they don't need to be saved. */
@@ -2545,8 +2540,8 @@ static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
 			return uvc_video_suspend(stream);
 	}
 
-	uvc_trace(dev, UVC_TRACE_SUSPEND,
-		  "Suspend: video streaming USB interface mismatch.\n");
+	uvc_dbg(dev, SUSPEND,
+		"Suspend: video streaming USB interface mismatch\n");
 	return -EINVAL;
 }
 
@@ -2556,8 +2551,8 @@ static int __uvc_resume(struct usb_interface *intf, int reset)
 	struct uvc_streaming *stream;
 	int ret = 0;
 
-	uvc_trace(dev, UVC_TRACE_SUSPEND, "Resuming interface %u\n",
-		  intf->cur_altsetting->desc.bInterfaceNumber);
+	uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",
+		intf->cur_altsetting->desc.bInterfaceNumber);
 
 	if (intf->cur_altsetting->desc.bInterfaceSubClass ==
 	    UVC_SC_VIDEOCONTROL) {
@@ -2585,8 +2580,8 @@ static int __uvc_resume(struct usb_interface *intf, int reset)
 		}
 	}
 
-	uvc_trace(dev, UVC_TRACE_SUSPEND,
-		  "Resume: video streaming USB interface mismatch.\n");
+	uvc_dbg(dev, SUSPEND,
+		"Resume: video streaming USB interface mismatch\n");
 	return -EINVAL;
 }
 
@@ -2636,7 +2631,7 @@ module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");
 module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(quirks, "Forced device quirks");
-module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);
+module_param_named(trace, uvc_dbg_param, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(trace, "Trace level bitmask");
 module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(timeout, "Streaming control requests timeout");
diff --git a/drivers/media/usb/uvc/uvc_isight.c b/drivers/media/usb/uvc/uvc_isight.c
index 445c4d39aeff..2578d6ee4829 100644
--- a/drivers/media/usb/uvc/uvc_isight.c
+++ b/drivers/media/usb/uvc/uvc_isight.c
@@ -50,16 +50,15 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
 
 	if ((len >= 14 && memcmp(&data[2], hdr, 12) == 0) ||
 	    (len >= 15 && memcmp(&data[3], hdr, 12) == 0)) {
-		uvc_trace(stream->dev, UVC_TRACE_FRAME,
-			  "iSight header found\n");
+		uvc_dbg(stream->dev, FRAME, "iSight header found\n");
 		is_header = 1;
 	}
 
 	/* Synchronize to the input stream by waiting for a header packet. */
 	if (buf->state != UVC_BUF_STATE_ACTIVE) {
 		if (!is_header) {
-			uvc_trace(stream->dev, UVC_TRACE_FRAME,
-				  "Dropping packet (out of sync).\n");
+			uvc_dbg(stream->dev, FRAME,
+				"Dropping packet (out of sync)\n");
 			return 0;
 		}
 
@@ -87,8 +86,8 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
 		buf->bytesused += nbytes;
 
 		if (len > maxlen || buf->bytesused == buf->length) {
-			uvc_trace(stream->dev, UVC_TRACE_FRAME,
-				  "Frame complete (overflow).\n");
+			uvc_dbg(stream->dev, FRAME,
+				"Frame complete (overflow)\n");
 			buf->state = UVC_BUF_STATE_DONE;
 		}
 	}
@@ -105,9 +104,9 @@ void uvc_video_decode_isight(struct uvc_urb *uvc_urb, struct uvc_buffer *buf,
 
 	for (i = 0; i < urb->number_of_packets; ++i) {
 		if (urb->iso_frame_desc[i].status < 0) {
-			uvc_trace(stream->dev, UVC_TRACE_FRAME,
-				  "USB isochronous frame lost (%d).\n",
-				  urb->iso_frame_desc[i].status);
+			uvc_dbg(stream->dev, FRAME,
+				"USB isochronous frame lost (%d)\n",
+				urb->iso_frame_desc[i].status);
 		}
 
 		/* Decode the payload packet.
diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index 2255daa3e240..21a907d32bb7 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -103,8 +103,8 @@ static int uvc_buffer_prepare(struct vb2_buffer *vb)
 
 	if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
 	    vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) {
-		uvc_trace(uvc_queue_to_stream(queue)->dev, UVC_TRACE_CAPTURE,
-			  "[E] Bytes used out of bounds.\n");
+		uvc_dbg(uvc_queue_to_stream(queue)->dev, CAPTURE,
+			"[E] Bytes used out of bounds\n");
 		return -EINVAL;
 	}
 
diff --git a/drivers/media/usb/uvc/uvc_status.c b/drivers/media/usb/uvc/uvc_status.c
index b5f493216fcd..d65666bc68f3 100644
--- a/drivers/media/usb/uvc/uvc_status.c
+++ b/drivers/media/usb/uvc/uvc_status.c
@@ -93,22 +93,21 @@ static void uvc_event_streaming(struct uvc_device *dev,
 				struct uvc_streaming_status *status, int len)
 {
 	if (len < 3) {
-		uvc_trace(dev, UVC_TRACE_STATUS,
-			  "Invalid streaming status event received.\n");
+		uvc_dbg(dev, STATUS,
+			"Invalid streaming status event received\n");
 		return;
 	}
 
 	if (status->bEvent == 0) {
 		if (len < 4)
 			return;
-		uvc_trace(dev, UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n",
-			  status->bOriginator,
-			  status->bValue[0] ? "pressed" : "released", len);
+		uvc_dbg(dev, STATUS, "Button (intf %u) %s len %d\n",
+			status->bOriginator,
+			status->bValue[0] ? "pressed" : "released", len);
 		uvc_input_report_key(dev, KEY_CAMERA, status->bValue[0]);
 	} else {
-		uvc_trace(dev, UVC_TRACE_STATUS,
-			  "Stream %u error event %02x len %d.\n",
-			  status->bOriginator, status->bEvent, len);
+		uvc_dbg(dev, STATUS, "Stream %u error event %02x len %d\n",
+			status->bOriginator, status->bEvent, len);
 	}
 }
 
@@ -163,14 +162,13 @@ static bool uvc_event_control(struct urb *urb,
 
 	if (len < 6 || status->bEvent != 0 ||
 	    status->bAttribute >= ARRAY_SIZE(attrs)) {
-		uvc_trace(dev, UVC_TRACE_STATUS,
-			  "Invalid control status event received.\n");
+		uvc_dbg(dev, STATUS, "Invalid control status event received\n");
 		return false;
 	}
 
-	uvc_trace(dev, UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",
-		  status->bOriginator, status->bSelector,
-		  attrs[status->bAttribute], len);
+	uvc_dbg(dev, STATUS, "Control %u/%u %s change len %d\n",
+		status->bOriginator, status->bSelector,
+		attrs[status->bAttribute], len);
 
 	/* Find the control. */
 	ctrl = uvc_event_find_ctrl(dev, status, &chain);
@@ -236,9 +234,8 @@ static void uvc_status_complete(struct urb *urb)
 		}
 
 		default:
-			uvc_trace(dev, UVC_TRACE_STATUS,
-				  "Unknown status event type %u.\n",
-				  dev->status[0]);
+			uvc_dbg(dev, STATUS, "Unknown status event type %u\n",
+				dev->status[0]);
 			break;
 		}
 	}
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 3a2d17bc766b..2b8cbb4730e0 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -75,9 +75,8 @@ static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain,
 		break;
 
 	default:
-		uvc_trace(chain->dev, UVC_TRACE_CONTROL,
-			  "Unsupported V4L2 control type %u.\n",
-			  xmap->v4l2_type);
+		uvc_dbg(chain->dev, CONTROL,
+			"Unsupported V4L2 control type %u\n", xmap->v4l2_type);
 		ret = -ENOTTY;
 		goto free_map;
 	}
@@ -165,11 +164,10 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 		return -EINVAL;
 
 	fcc = (u8 *)&fmt->fmt.pix.pixelformat;
-	uvc_trace(stream->dev, UVC_TRACE_FORMAT,
-		  "Trying format 0x%08x (%c%c%c%c): %ux%u.\n",
-		  fmt->fmt.pix.pixelformat,
-		  fcc[0], fcc[1], fcc[2], fcc[3],
-		  fmt->fmt.pix.width, fmt->fmt.pix.height);
+	uvc_dbg(stream->dev, FORMAT, "Trying format 0x%08x (%c%c%c%c): %ux%u\n",
+		fmt->fmt.pix.pixelformat,
+		fcc[0], fcc[1], fcc[2], fcc[3],
+		fmt->fmt.pix.width, fmt->fmt.pix.height);
 
 	/* Check if the hardware supports the requested format, use the default
 	 * format otherwise.
@@ -209,18 +207,17 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 	}
 
 	if (frame == NULL) {
-		uvc_trace(stream->dev, UVC_TRACE_FORMAT,
-			  "Unsupported size %ux%u.\n", fmt->fmt.pix.width,
-			  fmt->fmt.pix.height);
+		uvc_dbg(stream->dev, FORMAT, "Unsupported size %ux%u\n",
+			fmt->fmt.pix.width, fmt->fmt.pix.height);
 		return -EINVAL;
 	}
 
 	/* Use the default frame interval. */
 	interval = frame->dwDefaultFrameInterval;
-	uvc_trace(stream->dev, UVC_TRACE_FORMAT,
-		  "Using default frame interval %u.%u us (%u.%u fps).\n",
-		  interval / 10, interval % 10, 10000000 / interval,
-		 (100000000 / interval) % 10);
+	uvc_dbg(stream->dev, FORMAT,
+		"Using default frame interval %u.%u us (%u.%u fps)\n",
+		interval / 10, interval % 10, 10000000 / interval,
+		(100000000 / interval) % 10);
 
 	/* Set the format index, frame index and frame interval. */
 	memset(probe, 0, sizeof(*probe));
@@ -262,9 +259,8 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 	}
 
 	if (i == stream->nformats) {
-		uvc_trace(stream->dev, UVC_TRACE_FORMAT,
-			  "Unknown bFormatIndex %u\n",
-			  probe->bFormatIndex);
+		uvc_dbg(stream->dev, FORMAT, "Unknown bFormatIndex %u\n",
+			probe->bFormatIndex);
 		return -EINVAL;
 	}
 
@@ -276,9 +272,8 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 	}
 
 	if (i == format->nframes) {
-		uvc_trace(stream->dev, UVC_TRACE_FORMAT,
-			  "Unknown bFrameIndex %u\n",
-			  probe->bFrameIndex);
+		uvc_dbg(stream->dev, FORMAT, "Unknown bFrameIndex %u\n",
+			probe->bFrameIndex);
 		return -EINVAL;
 	}
 
@@ -422,9 +417,8 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
 
 	interval = uvc_fraction_to_interval(timeperframe.numerator,
 		timeperframe.denominator);
-	uvc_trace(stream->dev, UVC_TRACE_FORMAT,
-		  "Setting frame interval to %u/%u (%u).\n",
-		  timeperframe.numerator, timeperframe.denominator, interval);
+	uvc_dbg(stream->dev, FORMAT, "Setting frame interval to %u/%u (%u)\n",
+		timeperframe.numerator, timeperframe.denominator, interval);
 
 	mutex_lock(&stream->mutex);
 
@@ -553,7 +547,7 @@ static int uvc_v4l2_open(struct file *file)
 	int ret = 0;
 
 	stream = video_drvdata(file);
-	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
+	uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
 
 	ret = usb_autopm_get_interface(stream->dev->intf);
 	if (ret < 0)
@@ -595,7 +589,7 @@ static int uvc_v4l2_release(struct file *file)
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
+	uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
 
 	/* Only free resources if this is a privileged handle. */
 	if (uvc_has_privileges(handle))
@@ -1471,8 +1465,7 @@ static ssize_t uvc_v4l2_read(struct file *file, char __user *data,
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(stream->dev, UVC_TRACE_CALLS,
-		  "uvc_v4l2_read: not implemented.\n");
+	uvc_dbg(stream->dev, CALLS, "%s: not implemented\n", __func__);
 	return -EINVAL;
 }
 
@@ -1481,7 +1474,7 @@ static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
+	uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
 
 	return uvc_queue_mmap(&stream->queue, vma);
 }
@@ -1491,7 +1484,7 @@ static __poll_t uvc_v4l2_poll(struct file *file, poll_table *wait)
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
+	uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
 
 	return uvc_queue_poll(&stream->queue, file, wait);
 }
@@ -1504,7 +1497,7 @@ static unsigned long uvc_v4l2_get_unmapped_area(struct file *file,
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
+	uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
 
 	return uvc_queue_get_unmapped_area(&stream->queue, pgoff);
 }
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index e44fcb645516..7189624e1ec7 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -95,7 +95,7 @@ int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
 	if (ret != 1)
 		return ret < 0 ? ret : -EPIPE;
 
-	uvc_trace(dev, UVC_TRACE_CONTROL, "Control error %u\n", error);
+	uvc_dbg(dev, CONTROL, "Control error %u\n", error);
 
 	switch (error) {
 	case 0:
@@ -705,12 +705,12 @@ void uvc_video_clock_update(struct uvc_streaming *stream,
 
 	sof = y;
 
-	uvc_trace(stream->dev, UVC_TRACE_CLOCK,
-		  "%s: PTS %u y %llu.%06llu SOF %u.%06llu (x1 %u x2 %u y1 %u y2 %u SOF offset %u)\n",
-		  stream->dev->name, buf->pts,
-		  y >> 16, div_u64((y & 0xffff) * 1000000, 65536),
-		  sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
-		  x1, x2, y1, y2, clock->sof_offset);
+	uvc_dbg(stream->dev, CLOCK,
+		"%s: PTS %u y %llu.%06llu SOF %u.%06llu (x1 %u x2 %u y1 %u y2 %u SOF offset %u)\n",
+		stream->dev->name, buf->pts,
+		y >> 16, div_u64((y & 0xffff) * 1000000, 65536),
+		sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
+		x1, x2, y1, y2, clock->sof_offset);
 
 	/* Second step, SOF to host clock conversion. */
 	x1 = (uvc_video_clock_host_sof(first) + 2048) << 16;
@@ -740,13 +740,13 @@ void uvc_video_clock_update(struct uvc_streaming *stream,
 
 	timestamp = ktime_to_ns(first->host_time) + y - y1;
 
-	uvc_trace(stream->dev, UVC_TRACE_CLOCK,
-		  "%s: SOF %u.%06llu y %llu ts %llu buf ts %llu (x1 %u/%u/%u x2 %u/%u/%u y1 %u y2 %u)\n",
-		  stream->dev->name,
-		  sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
-		  y, timestamp, vbuf->vb2_buf.timestamp,
-		  x1, first->host_sof, first->dev_sof,
-		  x2, last->host_sof, last->dev_sof, y1, y2);
+	uvc_dbg(stream->dev, CLOCK,
+		"%s: SOF %u.%06llu y %llu ts %llu buf ts %llu (x1 %u/%u/%u x2 %u/%u/%u y1 %u y2 %u)\n",
+		stream->dev->name,
+		sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
+		y, timestamp, vbuf->vb2_buf.timestamp,
+		x1, first->host_sof, first->dev_sof,
+		x2, last->host_sof, last->dev_sof, y1, y2);
 
 	/* Update the V4L2 buffer. */
 	vbuf->vb2_buf.timestamp = timestamp;
@@ -875,15 +875,15 @@ static void uvc_video_stats_update(struct uvc_streaming *stream)
 {
 	struct uvc_stats_frame *frame = &stream->stats.frame;
 
-	uvc_trace(stream->dev, UVC_TRACE_STATS,
-		  "frame %u stats: %u/%u/%u packets, %u/%u/%u pts (%searly %sinitial), %u/%u scr, last pts/stc/sof %u/%u/%u\n",
-		  stream->sequence, frame->first_data,
-		  frame->nb_packets - frame->nb_empty, frame->nb_packets,
-		  frame->nb_pts_diffs, frame->last_pts_diff, frame->nb_pts,
-		  frame->has_early_pts ? "" : "!",
-		  frame->has_initial_pts ? "" : "!",
-		  frame->nb_scr_diffs, frame->nb_scr,
-		  frame->pts, frame->scr_stc, frame->scr_sof);
+	uvc_dbg(stream->dev, STATS,
+		"frame %u stats: %u/%u/%u packets, %u/%u/%u pts (%searly %sinitial), %u/%u scr, last pts/stc/sof %u/%u/%u\n",
+		stream->sequence, frame->first_data,
+		frame->nb_packets - frame->nb_empty, frame->nb_packets,
+		frame->nb_pts_diffs, frame->last_pts_diff, frame->nb_pts,
+		frame->has_early_pts ? "" : "!",
+		frame->has_initial_pts ? "" : "!",
+		frame->nb_scr_diffs, frame->nb_scr,
+		frame->pts, frame->scr_stc, frame->scr_sof);
 
 	stream->stats.stream.nb_frames++;
 	stream->stats.stream.nb_packets += stream->stats.frame.nb_packets;
@@ -1038,8 +1038,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,
 
 	/* Mark the buffer as bad if the error bit is set. */
 	if (data[1] & UVC_STREAM_ERR) {
-		uvc_trace(stream->dev, UVC_TRACE_FRAME,
-			  "Marking buffer as bad (error bit set).\n");
+		uvc_dbg(stream->dev, FRAME,
+			"Marking buffer as bad (error bit set)\n");
 		buf->error = 1;
 	}
 
@@ -1053,8 +1053,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,
 	 */
 	if (buf->state != UVC_BUF_STATE_ACTIVE) {
 		if (fid == stream->last_fid) {
-			uvc_trace(stream->dev, UVC_TRACE_FRAME,
-				  "Dropping payload (out of sync).\n");
+			uvc_dbg(stream->dev, FRAME,
+				"Dropping payload (out of sync)\n");
 			if ((stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) &&
 			    (data[1] & UVC_STREAM_EOF))
 				stream->last_fid ^= UVC_STREAM_FID;
@@ -1085,8 +1085,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,
 	 * previous payload had the EOF bit set.
 	 */
 	if (fid != stream->last_fid && buf->bytesused != 0) {
-		uvc_trace(stream->dev, UVC_TRACE_FRAME,
-			  "Frame complete (FID bit toggled).\n");
+		uvc_dbg(stream->dev, FRAME,
+			"Frame complete (FID bit toggled)\n");
 		buf->state = UVC_BUF_STATE_READY;
 		return -EAGAIN;
 	}
@@ -1147,8 +1147,8 @@ static void uvc_video_decode_data(struct uvc_urb *uvc_urb,
 
 	/* Complete the current frame if the buffer size was exceeded. */
 	if (len > maxlen) {
-		uvc_trace(uvc_urb->stream->dev, UVC_TRACE_FRAME,
-			  "Frame complete (overflow).\n");
+		uvc_dbg(uvc_urb->stream->dev, FRAME,
+			"Frame complete (overflow)\n");
 		buf->error = 1;
 		buf->state = UVC_BUF_STATE_READY;
 	}
@@ -1161,11 +1161,9 @@ static void uvc_video_decode_end(struct uvc_streaming *stream,
 {
 	/* Mark the buffer as done if the EOF marker is set. */
 	if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
-		uvc_trace(stream->dev, UVC_TRACE_FRAME,
-			  "Frame complete (EOF found).\n");
+		uvc_dbg(stream->dev, FRAME, "Frame complete (EOF found)\n");
 		if (data[0] == len)
-			uvc_trace(stream->dev, UVC_TRACE_FRAME,
-				  "EOF in empty payload.\n");
+			uvc_dbg(stream->dev, FRAME, "EOF in empty payload\n");
 		buf->state = UVC_BUF_STATE_READY;
 		if (stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID)
 			stream->last_fid ^= UVC_STREAM_FID;
@@ -1281,13 +1279,13 @@ static void uvc_video_decode_meta(struct uvc_streaming *stream,
 	memcpy(&meta->length, mem, length);
 	meta_buf->bytesused += length + sizeof(meta->ns) + sizeof(meta->sof);
 
-	uvc_trace(stream->dev, UVC_TRACE_FRAME,
-		  "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC %u frame SOF %u\n",
-		  __func__, ktime_to_ns(time), meta->sof, meta->length,
-		  meta->flags,
-		  has_pts ? *(u32 *)meta->buf : 0,
-		  has_scr ? *(u32 *)scr : 0,
-		  has_scr ? *(u32 *)(scr + 4) & 0x7ff : 0);
+	uvc_dbg(stream->dev, FRAME,
+		"%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC %u frame SOF %u\n",
+		__func__, ktime_to_ns(time), meta->sof, meta->length,
+		meta->flags,
+		has_pts ? *(u32 *)meta->buf : 0,
+		has_scr ? *(u32 *)scr : 0,
+		has_scr ? *(u32 *)(scr + 4) & 0x7ff : 0);
 }
 
 /* ------------------------------------------------------------------------
@@ -1341,9 +1339,9 @@ static void uvc_video_decode_isoc(struct uvc_urb *uvc_urb,
 
 	for (i = 0; i < urb->number_of_packets; ++i) {
 		if (urb->iso_frame_desc[i].status < 0) {
-			uvc_trace(stream->dev, UVC_TRACE_FRAME,
-				  "USB isochronous frame lost (%d).\n",
-				  urb->iso_frame_desc[i].status);
+			uvc_dbg(stream->dev, FRAME,
+				"USB isochronous frame lost (%d)\n",
+				urb->iso_frame_desc[i].status);
 			/* Mark the buffer as faulty. */
 			if (buf != NULL)
 				buf->error = 1;
@@ -1631,16 +1629,16 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming *stream,
 		}
 
 		if (i == UVC_URBS) {
-			uvc_trace(stream->dev, UVC_TRACE_VIDEO,
-				  "Allocated %u URB buffers of %ux%u bytes each.\n",
-				  UVC_URBS, npackets, psize);
+			uvc_dbg(stream->dev, VIDEO,
+				"Allocated %u URB buffers of %ux%u bytes each\n",
+				UVC_URBS, npackets, psize);
 			return npackets;
 		}
 	}
 
-	uvc_trace(stream->dev, UVC_TRACE_VIDEO,
-		  "Failed to allocate URB buffers (%u bytes per packet).\n",
-		  psize);
+	uvc_dbg(stream->dev, VIDEO,
+		"Failed to allocate URB buffers (%u bytes per packet)\n",
+		psize);
 	return 0;
 }
 
@@ -1839,13 +1837,13 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream,
 		bandwidth = stream->ctrl.dwMaxPayloadTransferSize;
 
 		if (bandwidth == 0) {
-			uvc_trace(stream->dev, UVC_TRACE_VIDEO,
-				  "Device requested null bandwidth, defaulting to lowest.\n");
+			uvc_dbg(stream->dev, VIDEO,
+				"Device requested null bandwidth, defaulting to lowest\n");
 			bandwidth = 1;
 		} else {
-			uvc_trace(stream->dev, UVC_TRACE_VIDEO,
-				  "Device requested %u B/frame bandwidth.\n",
-				  bandwidth);
+			uvc_dbg(stream->dev, VIDEO,
+				"Device requested %u B/frame bandwidth\n",
+				bandwidth);
 		}
 
 		for (i = 0; i < intf->num_altsetting; ++i) {
@@ -1868,14 +1866,14 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream,
 		}
 
 		if (best_ep == NULL) {
-			uvc_trace(stream->dev, UVC_TRACE_VIDEO,
-				  "No fast enough alt setting for requested bandwidth.\n");
+			uvc_dbg(stream->dev, VIDEO,
+				"No fast enough alt setting for requested bandwidth\n");
 			return -EIO;
 		}
 
-		uvc_trace(stream->dev, UVC_TRACE_VIDEO,
-			  "Selecting alternate setting %u (%u B/frame bandwidth).\n",
-			  altsetting, best_psize);
+		uvc_dbg(stream->dev, VIDEO,
+			"Selecting alternate setting %u (%u B/frame bandwidth)\n",
+			altsetting, best_psize);
 
 		ret = usb_set_interface(stream->dev->udev, intfnum, altsetting);
 		if (ret < 0)
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index 63f7e88c5713..1ca16c95ba25 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -731,18 +731,18 @@ struct uvc_driver {
  * Debugging, printing and logging
  */
 
-#define UVC_TRACE_PROBE		(1 << 0)
-#define UVC_TRACE_DESCR		(1 << 1)
-#define UVC_TRACE_CONTROL	(1 << 2)
-#define UVC_TRACE_FORMAT	(1 << 3)
-#define UVC_TRACE_CAPTURE	(1 << 4)
-#define UVC_TRACE_CALLS		(1 << 5)
-#define UVC_TRACE_FRAME		(1 << 7)
-#define UVC_TRACE_SUSPEND	(1 << 8)
-#define UVC_TRACE_STATUS	(1 << 9)
-#define UVC_TRACE_VIDEO		(1 << 10)
-#define UVC_TRACE_STATS		(1 << 11)
-#define UVC_TRACE_CLOCK		(1 << 12)
+#define UVC_DBG_PROBE		(1 << 0)
+#define UVC_DBG_DESCR		(1 << 1)
+#define UVC_DBG_CONTROL		(1 << 2)
+#define UVC_DBG_FORMAT		(1 << 3)
+#define UVC_DBG_CAPTURE		(1 << 4)
+#define UVC_DBG_CALLS		(1 << 5)
+#define UVC_DBG_FRAME		(1 << 7)
+#define UVC_DBG_SUSPEND		(1 << 8)
+#define UVC_DBG_STATUS		(1 << 9)
+#define UVC_DBG_VIDEO		(1 << 10)
+#define UVC_DBG_STATS		(1 << 11)
+#define UVC_DBG_CLOCK		(1 << 12)
 
 #define UVC_WARN_MINMAX		0
 #define UVC_WARN_PROBE_DEF	1
@@ -750,20 +750,20 @@ struct uvc_driver {
 
 extern unsigned int uvc_clock_param;
 extern unsigned int uvc_no_drop_param;
-extern unsigned int uvc_trace_param;
+extern unsigned int uvc_dbg_param;
 extern unsigned int uvc_timeout_param;
 extern unsigned int uvc_hw_timestamps_param;
 
-#define uvc_trace(_dev, flag, fmt, ...)					\
+#define uvc_dbg(_dev, flag, fmt, ...)					\
 do {									\
-	if (uvc_trace_param & flag)					\
+	if (uvc_dbg_param & UVC_DBG_##flag)				\
 		dev_printk(KERN_DEBUG, &(_dev)->udev->dev, fmt,		\
 			   ##__VA_ARGS__);				\
 } while (0)
 
-#define uvc_trace_cont(flag, fmt, ...)					\
+#define uvc_dbg_cont(flag, fmt, ...)					\
 do {									\
-	if (uvc_trace_param & flag)					\
+	if (uvc_dbg_param & UVC_DBG_##flag)				\
 		pr_cont(fmt, ##__VA_ARGS__);				\
 } while (0)
Ricardo Ribalda Dec. 23, 2020, 1:39 p.m. UTC | #2 
Hi Joe

On Wed, Dec 23, 2020 at 12:30 PM Joe Perches <joe@perches.com> wrote:
>

> Perhaps this on top.

>

> trace isn't a good name as it's not a trace mechanism, it is a

> typical debug mechanism.

>

> Rename uvc_trace/uvc_trace_cont macros to uvc_dbg/uvc_dbg_cont.

> Rename uvc_trace_param to uvc_dbg_param

> Rename UVC_TRACE_<FOO> defines to UVC_DBG_<FOO>

> Use ## concatenation in uvc_dbg macros to avoid overly long and

> repetitive UVC_DBG uses

> ---

I have added your patch to

https://patchwork.linuxtv.org/project/linux-media/patch/20201223133528.55014-12-ribalda@chromium.org/

Hope you don't mind.

Cheers!

>  drivers/media/usb/uvc/uvc_ctrl.c   |  81 +++++----

>  drivers/media/usb/uvc/uvc_driver.c | 343 ++++++++++++++++++-------------------

>  drivers/media/usb/uvc/uvc_isight.c |  17 +-

>  drivers/media/usb/uvc/uvc_queue.c  |   4 +-

>  drivers/media/usb/uvc/uvc_status.c |  29 ++--

>  drivers/media/usb/uvc/uvc_v4l2.c   |  55 +++---

>  drivers/media/usb/uvc/uvc_video.c  | 120 +++++++------

>  drivers/media/usb/uvc/uvcvideo.h   |  34 ++--

>  8 files changed, 331 insertions(+), 352 deletions(-)

>

> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c

> index bf448c213c53..7b70877b2483 100644

> --- a/drivers/media/usb/uvc/uvc_ctrl.c

> +++ b/drivers/media/usb/uvc/uvc_ctrl.c

> @@ -906,8 +906,8 @@ static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,

>         }

>

>         if (ctrl == NULL && !next)

> -               uvc_trace(chain->dev, UVC_TRACE_CONTROL,

> -                         "Control 0x%08x not found.\n", v4l2_id);

> +               uvc_dbg(chain->dev, CONTROL, "Control 0x%08x not found\n",

> +                       v4l2_id);

>

>         return ctrl;

>  }

> @@ -1820,9 +1820,9 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,

>         ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum,

>                              info->selector, data, 2);

>         if (ret < 0) {

> -               uvc_trace(dev, UVC_TRACE_CONTROL,

> -                         "GET_LEN failed on control %pUl/%u (%d).\n",

> -                         info->entity, info->selector, ret);

> +               uvc_dbg(dev, CONTROL,

> +                       "GET_LEN failed on control %pUl/%u (%d)\n",

> +                       info->entity, info->selector, ret);

>                 goto done;

>         }

>

> @@ -1833,20 +1833,20 @@ static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,

>

>         ret = uvc_ctrl_get_flags(dev, ctrl, info);

>         if (ret < 0) {

> -               uvc_trace(dev, UVC_TRACE_CONTROL,

> -                         "Failed to get flags for control %pUl/%u (%d).\n",

> -                         info->entity, info->selector, ret);

> +               uvc_dbg(dev, CONTROL,

> +                       "Failed to get flags for control %pUl/%u (%d)\n",

> +                       info->entity, info->selector, ret);

>                 goto done;

>         }

>

>         uvc_ctrl_fixup_xu_info(dev, ctrl, info);

>

> -       uvc_trace(dev, UVC_TRACE_CONTROL,

> -                 "XU control %pUl/%u queried: len %u, flags { get %u set %u auto %u }.\n",

> -                 info->entity, info->selector, info->size,

> -                 (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,

> -                 (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,

> -                 (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);

> +       uvc_dbg(dev, CONTROL,

> +               "XU control %pUl/%u queried: len %u, flags { get %u set %u auto %u }\n",

> +               info->entity, info->selector, info->size,

> +               (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,

> +               (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,

> +               (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0);

>

>  done:

>         kfree(data);

> @@ -1871,10 +1871,10 @@ static int uvc_ctrl_init_xu_ctrl(struct uvc_device *dev,

>

>         ret = uvc_ctrl_add_info(dev, ctrl, &info);

>         if (ret < 0)

> -               uvc_trace(dev, UVC_TRACE_CONTROL,

> -                         "Failed to initialize control %pUl/%u on device %s entity %u\n",

> -                         info.entity, info.selector, dev->udev->devpath,

> -                         ctrl->entity->id);

> +               uvc_dbg(dev, CONTROL,

> +                       "Failed to initialize control %pUl/%u on device %s entity %u\n",

> +                       info.entity, info.selector, dev->udev->devpath,

> +                       ctrl->entity->id);

>

>         return ret;

>  }

> @@ -1902,8 +1902,8 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,

>         }

>

>         if (!found) {

> -               uvc_trace(chain->dev, UVC_TRACE_CONTROL,

> -                         "Extension unit %u not found.\n", xqry->unit);

> +               uvc_dbg(chain->dev, CONTROL, "Extension unit %u not found\n",

> +                       xqry->unit);

>                 return -ENOENT;

>         }

>

> @@ -1918,9 +1918,8 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,

>         }

>

>         if (!found) {

> -               uvc_trace(chain->dev, UVC_TRACE_CONTROL,

> -                         "Control %pUl/%u not found.\n", entity->guid,

> -                         xqry->selector);

> +               uvc_dbg(chain->dev, CONTROL, "Control %pUl/%u not found\n",

> +                       entity->guid, xqry->selector);

>                 return -ENOENT;

>         }

>

> @@ -2068,10 +2067,9 @@ static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,

>

>         ctrl->initialized = 1;

>

> -       uvc_trace(dev, UVC_TRACE_CONTROL,

> -                 "Added control %pUl/%u to device %s entity %u\n",

> -                 ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,

> -                 ctrl->entity->id);

> +       uvc_dbg(dev, CONTROL, "Added control %pUl/%u to device %s entity %u\n",

> +               ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,

> +               ctrl->entity->id);

>

>         return 0;

>  }

> @@ -2108,9 +2106,8 @@ static int __uvc_ctrl_add_mapping(struct uvc_device *dev,

>                 map->set = uvc_set_le_value;

>

>         list_add_tail(&map->list, &ctrl->info.mappings);

> -       uvc_trace(dev, UVC_TRACE_CONTROL,

> -                 "Adding mapping '%s' to control %pUl/%u.\n",

> -                 map->name, ctrl->info.entity, ctrl->info.selector);

> +       uvc_dbg(dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n",

> +               map->name, ctrl->info.entity, ctrl->info.selector);

>

>         return 0;

>  }

> @@ -2126,9 +2123,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,

>         int ret;

>

>         if (mapping->id & ~V4L2_CTRL_ID_MASK) {

> -               uvc_trace(dev, UVC_TRACE_CONTROL,

> -                         "Can't add mapping '%s', control id 0x%08x is invalid.\n",

> -                         mapping->name, mapping->id);

> +               uvc_dbg(dev, CONTROL,

> +                       "Can't add mapping '%s', control id 0x%08x is invalid\n",

> +                       mapping->name, mapping->id);

>                 return -EINVAL;

>         }

>

> @@ -2173,9 +2170,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,

>

>         list_for_each_entry(map, &ctrl->info.mappings, list) {

>                 if (mapping->id == map->id) {

> -                       uvc_trace(dev, UVC_TRACE_CONTROL,

> -                                 "Can't add mapping '%s', control id 0x%08x already exists.\n",

> -                                 mapping->name, mapping->id);

> +                       uvc_dbg(dev, CONTROL,

> +                               "Can't add mapping '%s', control id 0x%08x already exists\n",

> +                               mapping->name, mapping->id);

>                         ret = -EEXIST;

>                         goto done;

>                 }

> @@ -2184,9 +2181,9 @@ int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,

>         /* Prevent excess memory consumption */

>         if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) {

>                 atomic_dec(&dev->nmappings);

> -               uvc_trace(dev, UVC_TRACE_CONTROL,

> -                         "Can't add mapping '%s', maximum mappings count (%u) exceeded.\n",

> -                         mapping->name, UVC_MAX_CONTROL_MAPPINGS);

> +               uvc_dbg(dev, CONTROL,

> +                       "Can't add mapping '%s', maximum mappings count (%u) exceeded\n",

> +                       mapping->name, UVC_MAX_CONTROL_MAPPINGS);

>                 ret = -ENOMEM;

>                 goto done;

>         }

> @@ -2255,9 +2252,9 @@ static void uvc_ctrl_prune_entity(struct uvc_device *dev,

>                     !uvc_test_bit(controls, blacklist[i].index))

>                         continue;

>

> -               uvc_trace(dev, UVC_TRACE_CONTROL,

> -                         "%u/%u control is black listed, removing it.\n",

> -                         entity->id, blacklist[i].index);

> +               uvc_dbg(dev, CONTROL,

> +                       "%u/%u control is black listed, removing it\n",

> +                       entity->id, blacklist[i].index);

>

>                 uvc_clear_bit(controls, blacklist[i].index);

>         }

> diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c

> index 1f72bda6036e..2dbed5c3831a 100644

> --- a/drivers/media/usb/uvc/uvc_driver.c

> +++ b/drivers/media/usb/uvc/uvc_driver.c

> @@ -33,7 +33,7 @@ unsigned int uvc_clock_param = CLOCK_MONOTONIC;

>  unsigned int uvc_hw_timestamps_param;

>  unsigned int uvc_no_drop_param;

>  static unsigned int uvc_quirks_param = -1;

> -unsigned int uvc_trace_param;

> +unsigned int uvc_dbg_param;

>  unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT;

>

>  /* ------------------------------------------------------------------------

> @@ -521,10 +521,10 @@ static int uvc_parse_format(struct uvc_device *dev,

>         case UVC_VS_FORMAT_FRAME_BASED:

>                 n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;

>                 if (buflen < n) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videostreaming interface %d FORMAT error\n",

> -                                 dev->udev->devnum,

> -                                 alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videostreaming interface %d FORMAT error\n",

> +                               dev->udev->devnum,

> +                               alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -585,10 +585,10 @@ static int uvc_parse_format(struct uvc_device *dev,

>

>         case UVC_VS_FORMAT_MJPEG:

>                 if (buflen < 11) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videostreaming interface %d FORMAT error\n",

> -                                 dev->udev->devnum,

> -                                 alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videostreaming interface %d FORMAT error\n",

> +                               dev->udev->devnum,

> +                               alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -601,10 +601,10 @@ static int uvc_parse_format(struct uvc_device *dev,

>

>         case UVC_VS_FORMAT_DV:

>                 if (buflen < 9) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videostreaming interface %d FORMAT error\n",

> -                                 dev->udev->devnum,

> -                                 alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videostreaming interface %d FORMAT error\n",

> +                               dev->udev->devnum,

> +                               alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -619,10 +619,10 @@ static int uvc_parse_format(struct uvc_device *dev,

>                         strscpy(format->name, "HD-DV", sizeof(format->name));

>                         break;

>                 default:

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videostreaming interface %d: unknown DV format %u\n",

> -                                 dev->udev->devnum,

> -                              alts->desc.bInterfaceNumber, buffer[8]);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videostreaming interface %d: unknown DV format %u\n",

> +                               dev->udev->devnum,

> +                               alts->desc.bInterfaceNumber, buffer[8]);

>                         return -EINVAL;

>                 }

>

> @@ -648,14 +648,14 @@ static int uvc_parse_format(struct uvc_device *dev,

>         case UVC_VS_FORMAT_STREAM_BASED:

>                 /* Not supported yet. */

>         default:

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "device %d videostreaming interface %d unsupported format %u\n",

> -                         dev->udev->devnum, alts->desc.bInterfaceNumber,

> -                         buffer[2]);

> +               uvc_dbg(dev, DESCR,

> +                       "device %d videostreaming interface %d unsupported format %u\n",

> +                       dev->udev->devnum, alts->desc.bInterfaceNumber,

> +                       buffer[2]);

>                 return -EINVAL;

>         }

>

> -       uvc_trace(dev, UVC_TRACE_DESCR, "Found format %s.\n", format->name);

> +       uvc_dbg(dev, DESCR, "Found format %s\n", format->name);

>

>         buflen -= buffer[0];

>         buffer += buffer[0];

> @@ -674,10 +674,10 @@ static int uvc_parse_format(struct uvc_device *dev,

>                 n = n ? n : 3;

>

>                 if (buflen < 26 + 4*n) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videostreaming interface %d FRAME error\n",

> -                                 dev->udev->devnum,

> -                                 alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videostreaming interface %d FRAME error\n",

> +                               dev->udev->devnum,

> +                               alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -739,10 +739,10 @@ static int uvc_parse_format(struct uvc_device *dev,

>                                 frame->dwDefaultFrameInterval;

>                 }

>

> -               uvc_trace(dev, UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",

> -                         frame->wWidth, frame->wHeight,

> -                         10000000 / frame->dwDefaultFrameInterval,

> -                         (100000000 / frame->dwDefaultFrameInterval) % 10);

> +               uvc_dbg(dev, DESCR, "- %ux%u (%u.%u fps)\n",

> +                       frame->wWidth, frame->wHeight,

> +                       10000000 / frame->dwDefaultFrameInterval,

> +                       (100000000 / frame->dwDefaultFrameInterval) % 10);

>

>                 format->nframes++;

>                 buflen -= buffer[0];

> @@ -758,10 +758,10 @@ static int uvc_parse_format(struct uvc_device *dev,

>         if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&

>             buffer[2] == UVC_VS_COLORFORMAT) {

>                 if (buflen < 6) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videostreaming interface %d COLORFORMAT error\n",

> -                                 dev->udev->devnum,

> -                                 alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videostreaming interface %d COLORFORMAT error\n",

> +                               dev->udev->devnum,

> +                               alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -793,18 +793,18 @@ static int uvc_parse_streaming(struct uvc_device *dev,

>

>         if (intf->cur_altsetting->desc.bInterfaceSubClass

>                 != UVC_SC_VIDEOSTREAMING) {

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "device %d interface %d isn't a video streaming interface\n",

> -                         dev->udev->devnum,

> -                         intf->altsetting[0].desc.bInterfaceNumber);

> +               uvc_dbg(dev, DESCR,

> +                       "device %d interface %d isn't a video streaming interface\n",

> +                       dev->udev->devnum,

> +                       intf->altsetting[0].desc.bInterfaceNumber);

>                 return -EINVAL;

>         }

>

>         if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "device %d interface %d is already claimed\n",

> -                         dev->udev->devnum,

> -                         intf->altsetting[0].desc.bInterfaceNumber);

> +               uvc_dbg(dev, DESCR,

> +                       "device %d interface %d is already claimed\n",

> +                       dev->udev->devnum,

> +                       intf->altsetting[0].desc.bInterfaceNumber);

>                 return -EINVAL;

>         }

>

> @@ -826,9 +826,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,

>

>                         if (ep->extralen > 2 &&

>                             ep->extra[1] == USB_DT_CS_INTERFACE) {

> -                               uvc_trace(dev, UVC_TRACE_DESCR,

> -                                         "trying extra data from endpoint %u.\n",

> -                                         i);

> +                               uvc_dbg(dev, DESCR,

> +                                       "trying extra data from endpoint %u\n",

> +                                       i);

>                                 buffer = alts->endpoint[i].extra;

>                                 buflen = alts->endpoint[i].extralen;

>                                 break;

> @@ -843,8 +843,8 @@ static int uvc_parse_streaming(struct uvc_device *dev,

>         }

>

>         if (buflen <= 2) {

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "no class-specific streaming interface descriptors found.\n");

> +               uvc_dbg(dev, DESCR,

> +                       "no class-specific streaming interface descriptors found\n");

>                 goto error;

>         }

>

> @@ -861,9 +861,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,

>                 break;

>

>         default:

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "device %d videostreaming interface %d HEADER descriptor not found.\n",

> -                         dev->udev->devnum, alts->desc.bInterfaceNumber);

> +               uvc_dbg(dev, DESCR,

> +                       "device %d videostreaming interface %d HEADER descriptor not found\n",

> +                       dev->udev->devnum, alts->desc.bInterfaceNumber);

>                 goto error;

>         }

>

> @@ -871,9 +871,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,

>         n = buflen >= size ? buffer[size-1] : 0;

>

>         if (buflen < size + p*n) {

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "device %d videostreaming interface %d HEADER descriptor is invalid.\n",

> -                         dev->udev->devnum, alts->desc.bInterfaceNumber);

> +               uvc_dbg(dev, DESCR,

> +                       "device %d videostreaming interface %d HEADER descriptor is invalid\n",

> +                       dev->udev->devnum, alts->desc.bInterfaceNumber);

>                 goto error;

>         }

>

> @@ -923,10 +923,10 @@ static int uvc_parse_streaming(struct uvc_device *dev,

>

>                 case UVC_VS_FORMAT_MPEG2TS:

>                 case UVC_VS_FORMAT_STREAM_BASED:

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videostreaming interface %d FORMAT %u is not supported.\n",

> -                                 dev->udev->devnum,

> -                                 alts->desc.bInterfaceNumber, _buffer[2]);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videostreaming interface %d FORMAT %u is not supported\n",

> +                               dev->udev->devnum,

> +                               alts->desc.bInterfaceNumber, _buffer[2]);

>                         break;

>

>                 case UVC_VS_FRAME_UNCOMPRESSED:

> @@ -948,9 +948,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,

>         }

>

>         if (nformats == 0) {

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "device %d videostreaming interface %d has no supported formats defined.\n",

> -                         dev->udev->devnum, alts->desc.bInterfaceNumber);

> +               uvc_dbg(dev, DESCR,

> +                       "device %d videostreaming interface %d has no supported formats defined\n",

> +                       dev->udev->devnum, alts->desc.bInterfaceNumber);

>                 goto error;

>         }

>

> @@ -997,10 +997,9 @@ static int uvc_parse_streaming(struct uvc_device *dev,

>         }

>

>         if (buflen)

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage.\n",

> -                         dev->udev->devnum, alts->desc.bInterfaceNumber,

> -                         buflen);

> +               uvc_dbg(dev, DESCR,

> +                       "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage\n",

> +                       dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);

>

>         /* Parse the alternate settings to find the maximum bandwidth. */

>         for (i = 0; i < intf->num_altsetting; ++i) {

> @@ -1133,9 +1132,9 @@ static int uvc_parse_vendor_control(struct uvc_device *dev,

>                 n = buflen >= 25 + p ? buffer[22+p] : 0;

>

>                 if (buflen < 25 + p + 2*n) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d EXTENSION_UNIT error\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d EXTENSION_UNIT error\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber);

>                         break;

>                 }

>

> @@ -1182,9 +1181,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                 n = buflen >= 12 ? buffer[11] : 0;

>

>                 if (buflen < 12 + n) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d HEADER error\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d HEADER error\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -1195,9 +1194,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                 for (i = 0; i < n; ++i) {

>                         intf = usb_ifnum_to_if(udev, buffer[12+i]);

>                         if (intf == NULL) {

> -                               uvc_trace(dev, UVC_TRACE_DESCR,

> -                                         "device %d interface %d doesn't exists\n",

> -                                         udev->devnum, i);

> +                               uvc_dbg(dev, DESCR,

> +                                       "device %d interface %d doesn't exists\n",

> +                                       udev->devnum, i);

>                                 continue;

>                         }

>

> @@ -1207,9 +1206,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>

>         case UVC_VC_INPUT_TERMINAL:

>                 if (buflen < 8) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d INPUT_TERMINAL error\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d INPUT_TERMINAL error\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -1226,10 +1225,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                  */

>                 type = get_unaligned_le16(&buffer[4]);

>                 if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber,

> -                                 buffer[3], type);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber,

> +                               buffer[3], type);

>                         return 0;

>                 }

>

> @@ -1248,9 +1247,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                 }

>

>                 if (buflen < len + n + p) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d INPUT_TERMINAL error\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d INPUT_TERMINAL error\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -1295,9 +1294,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>

>         case UVC_VC_OUTPUT_TERMINAL:

>                 if (buflen < 9) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -1306,10 +1305,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                  */

>                 type = get_unaligned_le16(&buffer[4]);

>                 if ((type & 0xff00) == 0) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber,

> -                                 buffer[3], type);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber,

> +                               buffer[3], type);

>                         return 0;

>                 }

>

> @@ -1333,9 +1332,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                 p = buflen >= 5 ? buffer[4] : 0;

>

>                 if (buflen < 5 || buflen < 6 + p) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d SELECTOR_UNIT error\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d SELECTOR_UNIT error\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -1359,9 +1358,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                 p = dev->uvc_version >= 0x0110 ? 10 : 9;

>

>                 if (buflen < p + n) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d PROCESSING_UNIT error\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d PROCESSING_UNIT error\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -1392,9 +1391,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                 n = buflen >= 24 + p ? buffer[22+p] : 0;

>

>                 if (buflen < 24 + p + n) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "device %d videocontrol interface %d EXTENSION_UNIT error\n",

> -                                 udev->devnum, alts->desc.bInterfaceNumber);

> +                       uvc_dbg(dev, DESCR,

> +                               "device %d videocontrol interface %d EXTENSION_UNIT error\n",

> +                               udev->devnum, alts->desc.bInterfaceNumber);

>                         return -EINVAL;

>                 }

>

> @@ -1419,9 +1418,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,

>                 break;

>

>         default:

> -               uvc_trace(dev, UVC_TRACE_DESCR,

> -                         "Found an unknown CS_INTERFACE descriptor (%u)\n",

> -                         buffer[2]);

> +               uvc_dbg(dev, DESCR,

> +                       "Found an unknown CS_INTERFACE descriptor (%u)\n",

> +                       buffer[2]);

>                 break;

>         }

>

> @@ -1466,9 +1465,9 @@ static int uvc_parse_control(struct uvc_device *dev)

>                 if (usb_endpoint_is_int_in(desc) &&

>                     le16_to_cpu(desc->wMaxPacketSize) >= 8 &&

>                     desc->bInterval != 0) {

> -                       uvc_trace(dev, UVC_TRACE_DESCR,

> -                                 "Found a Status endpoint (addr %02x).\n",

> -                                 desc->bEndpointAddress);

> +                       uvc_dbg(dev, DESCR,

> +                               "Found a Status endpoint (addr %02x)\n",

> +                               desc->bEndpointAddress);

>                         dev->int_ep = ep;

>                 }

>         }

> @@ -1652,23 +1651,23 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,

>  {

>         switch (UVC_ENTITY_TYPE(entity)) {

>         case UVC_VC_EXTENSION_UNIT:

> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- XU %d", entity->id);

> +               uvc_dbg_cont(PROBE, " <- XU %d", entity->id);

>

>                 if (entity->bNrInPins != 1) {

> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                 "Extension unit %d has more than 1 input pin.\n",

> -                                 entity->id);

> +                       uvc_dbg(chain->dev, DESCR,

> +                               "Extension unit %d has more than 1 input pin\n",

> +                               entity->id);

>                         return -1;

>                 }

>

>                 break;

>

>         case UVC_VC_PROCESSING_UNIT:

> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- PU %d", entity->id);

> +               uvc_dbg_cont(PROBE, " <- PU %d", entity->id);

>

>                 if (chain->processing != NULL) {

> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                 "Found multiple Processing Units in chain.\n");

> +                       uvc_dbg(chain->dev, DESCR,

> +                               "Found multiple Processing Units in chain\n");

>                         return -1;

>                 }

>

> @@ -1676,15 +1675,15 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,

>                 break;

>

>         case UVC_VC_SELECTOR_UNIT:

> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- SU %d", entity->id);

> +               uvc_dbg_cont(PROBE, " <- SU %d", entity->id);

>

>                 /* Single-input selector units are ignored. */

>                 if (entity->bNrInPins == 1)

>                         break;

>

>                 if (chain->selector != NULL) {

> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                 "Found multiple Selector Units in chain.\n");

> +                       uvc_dbg(chain->dev, DESCR,

> +                               "Found multiple Selector Units in chain\n");

>                         return -1;

>                 }

>

> @@ -1694,29 +1693,29 @@ static int uvc_scan_chain_entity(struct uvc_video_chain *chain,

>         case UVC_ITT_VENDOR_SPECIFIC:

>         case UVC_ITT_CAMERA:

>         case UVC_ITT_MEDIA_TRANSPORT_INPUT:

> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- IT %d\n", entity->id);

> +               uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);

>

>                 break;

>

>         case UVC_OTT_VENDOR_SPECIFIC:

>         case UVC_OTT_DISPLAY:

>         case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:

> -               uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", entity->id);

> +               uvc_dbg_cont(PROBE, " OT %d", entity->id);

>

>                 break;

>

>         case UVC_TT_STREAMING:

>                 if (UVC_ENTITY_IS_ITERM(entity))

> -                       uvc_trace_cont(UVC_TRACE_PROBE, " <- IT %d\n", entity->id);

> +                       uvc_dbg_cont(PROBE, " <- IT %d\n", entity->id);

>                 else

> -                       uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", entity->id);

> +                       uvc_dbg_cont(PROBE, " OT %d", entity->id);

>

>                 break;

>

>         default:

> -               uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                         "Unsupported entity type 0x%04x found in chain.\n",

> -                         UVC_ENTITY_TYPE(entity));

> +               uvc_dbg(chain->dev, DESCR,

> +                       "Unsupported entity type 0x%04x found in chain\n",

> +                       UVC_ENTITY_TYPE(entity));

>                 return -1;

>         }

>

> @@ -1742,26 +1741,26 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,

>                 if (forward == prev)

>                         continue;

>                 if (forward->chain.next || forward->chain.prev) {

> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                 "Found reference to entity %d already in chain.\n",

> -                                 forward->id);

> +                       uvc_dbg(chain->dev, DESCR,

> +                               "Found reference to entity %d already in chain\n",

> +                               forward->id);

>                         return -EINVAL;

>                 }

>

>                 switch (UVC_ENTITY_TYPE(forward)) {

>                 case UVC_VC_EXTENSION_UNIT:

>                         if (forward->bNrInPins != 1) {

> -                               uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                         "Extension unit %d has more than 1 input pin.\n",

> -                                         entity->id);

> +                               uvc_dbg(chain->dev, DESCR,

> +                                       "Extension unit %d has more than 1 input pin\n",

> +                                       entity->id);

>                                 return -EINVAL;

>                         }

>

>                         list_add_tail(&forward->chain, &chain->entities);

>                         if (!found)

> -                               uvc_trace_cont(UVC_TRACE_PROBE, " (->");

> +                               uvc_dbg_cont(PROBE, " (->");

>

> -                       uvc_trace_cont(UVC_TRACE_PROBE, " XU %d", forward->id);

> +                       uvc_dbg_cont(PROBE, " XU %d", forward->id);

>                         found = 1;

>                         break;

>

> @@ -1770,23 +1769,23 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,

>                 case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:

>                 case UVC_TT_STREAMING:

>                         if (UVC_ENTITY_IS_ITERM(forward)) {

> -                               uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                         "Unsupported input terminal %u.\n",

> -                                         forward->id);

> +                               uvc_dbg(chain->dev, DESCR,

> +                                       "Unsupported input terminal %u\n",

> +                                       forward->id);

>                                 return -EINVAL;

>                         }

>

>                         list_add_tail(&forward->chain, &chain->entities);

>                         if (!found)

> -                               uvc_trace_cont(UVC_TRACE_PROBE, " (->");

> +                               uvc_dbg_cont(PROBE, " (->");

>

> -                       uvc_trace_cont(UVC_TRACE_PROBE, " OT %d", forward->id);

> +                       uvc_dbg_cont(PROBE, " OT %d", forward->id);

>                         found = 1;

>                         break;

>                 }

>         }

>         if (found)

> -               uvc_trace_cont(UVC_TRACE_PROBE, ")");

> +               uvc_dbg_cont(PROBE, ")");

>

>         return 0;

>  }

> @@ -1811,33 +1810,33 @@ static int uvc_scan_chain_backward(struct uvc_video_chain *chain,

>                         break;

>                 }

>

> -               uvc_trace_cont(UVC_TRACE_PROBE, " <- IT");

> +               uvc_dbg_cont(PROBE, " <- IT");

>

>                 chain->selector = entity;

>                 for (i = 0; i < entity->bNrInPins; ++i) {

>                         id = entity->baSourceID[i];

>                         term = uvc_entity_by_id(chain->dev, id);

>                         if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {

> -                               uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                         "Selector unit %d input %d isn't connected to an input terminal\n",

> -                                         entity->id, i);

> +                               uvc_dbg(chain->dev, DESCR,

> +                                       "Selector unit %d input %d isn't connected to an input terminal\n",

> +                                       entity->id, i);

>                                 return -1;

>                         }

>

>                         if (term->chain.next || term->chain.prev) {

> -                               uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                         "Found reference to entity %d already in chain.\n",

> -                                         term->id);

> +                               uvc_dbg(chain->dev, DESCR,

> +                                       "Found reference to entity %d already in chain\n",

> +                                       term->id);

>                                 return -EINVAL;

>                         }

>

> -                       uvc_trace_cont(UVC_TRACE_PROBE, " %d", term->id);

> +                       uvc_dbg_cont(PROBE, " %d", term->id);

>

>                         list_add_tail(&term->chain, &chain->entities);

>                         uvc_scan_chain_forward(chain, term, entity);

>                 }

>

> -               uvc_trace_cont(UVC_TRACE_PROBE, "\n");

> +               uvc_dbg_cont(PROBE, "\n");

>

>                 id = 0;

>                 break;

> @@ -1860,8 +1859,8 @@ static int uvc_scan_chain_backward(struct uvc_video_chain *chain,

>

>         entity = uvc_entity_by_id(chain->dev, id);

>         if (entity == NULL) {

> -               uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                         "Found reference to unknown entity %d.\n", id);

> +               uvc_dbg(chain->dev, DESCR,

> +                       "Found reference to unknown entity %d\n", id);

>                 return -EINVAL;

>         }

>

> @@ -1874,7 +1873,7 @@ static int uvc_scan_chain(struct uvc_video_chain *chain,

>  {

>         struct uvc_entity *entity, *prev;

>

> -       uvc_trace(chain->dev, UVC_TRACE_PROBE, "Scanning UVC chain:");

> +       uvc_dbg(chain->dev, PROBE, "Scanning UVC chain:");

>

>         entity = term;

>         prev = NULL;

> @@ -1882,9 +1881,9 @@ static int uvc_scan_chain(struct uvc_video_chain *chain,

>         while (entity != NULL) {

>                 /* Entity must not be part of an existing chain */

>                 if (entity->chain.next || entity->chain.prev) {

> -                       uvc_trace(chain->dev, UVC_TRACE_DESCR,

> -                                 "Found reference to entity %d already in chain.\n",

> -                                 entity->id);

> +                       uvc_dbg(chain->dev, DESCR,

> +                               "Found reference to entity %d already in chain\n",

> +                               entity->id);

>                         return -EINVAL;

>                 }

>

> @@ -2038,9 +2037,8 @@ static int uvc_scan_fallback(struct uvc_device *dev)

>

>         list_add_tail(&chain->list, &dev->chains);

>

> -       uvc_trace(dev, UVC_TRACE_PROBE,

> -                 "Found a video chain by fallback heuristic (%s).\n",

> -                 uvc_print_chain(chain));

> +       uvc_dbg(dev, PROBE, "Found a video chain by fallback heuristic (%s)\n",

> +               uvc_print_chain(chain));

>

>         return 0;

>

> @@ -2082,9 +2080,8 @@ static int uvc_scan_device(struct uvc_device *dev)

>                         continue;

>                 }

>

> -               uvc_trace(dev, UVC_TRACE_PROBE,

> -                         "Found a valid video chain (%s).\n",

> -                         uvc_print_chain(chain));

> +               uvc_dbg(dev, PROBE, "Found a valid video chain (%s)\n",

> +                       uvc_print_chain(chain));

>

>                 list_add_tail(&chain->list, &dev->chains);

>         }

> @@ -2384,12 +2381,11 @@ static int uvc_probe(struct usb_interface *intf,

>                     ? dev->info->quirks : uvc_quirks_param;

>

>         if (id->idVendor && id->idProduct)

> -               uvc_trace(dev, UVC_TRACE_PROBE,

> -                         "Probing known UVC device %s (%04x:%04x)\n",

> -                         udev->devpath, id->idVendor, id->idProduct);

> +               uvc_dbg(dev, PROBE, "Probing known UVC device %s (%04x:%04x)\n",

> +                       udev->devpath, id->idVendor, id->idProduct);

>         else

> -               uvc_trace(dev, UVC_TRACE_PROBE,

> -                         "Probing generic UVC device %s\n", udev->devpath);

> +               uvc_dbg(dev, PROBE, "Probing generic UVC device %s\n",

> +                       udev->devpath);

>

>         if (udev->product != NULL)

>                 strscpy(dev->name, udev->product, sizeof(dev->name));

> @@ -2433,14 +2429,13 @@ static int uvc_probe(struct usb_interface *intf,

>

>         /* Parse the Video Class control descriptor. */

>         if (uvc_parse_control(dev) < 0) {

> -               uvc_trace(dev, UVC_TRACE_PROBE,

> -                         "Unable to parse UVC descriptors.\n");

> +               uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");

>                 goto error;

>         }

>

>         /* Parse the associated GPIOs. */

>         if (uvc_gpio_parse(dev) < 0) {

> -               uvc_trace(dev, UVC_TRACE_PROBE, "Unable to parse UVC GPIOs\n");

> +               uvc_dbg(dev, PROBE, "Unable to parse UVC GPIOs\n");

>                 goto error;

>         }

>

> @@ -2495,7 +2490,7 @@ static int uvc_probe(struct usb_interface *intf,

>                          "Unable to request privacy GPIO IRQ %d. Continuing without privacy events\n",

>                          ret);

>

> -       uvc_trace(dev, UVC_TRACE_PROBE, "UVC device initialized.\n");

> +       uvc_dbg(dev, PROBE, "UVC device initialized\n");

>         usb_enable_autosuspend(udev);

>         return 0;

>

> @@ -2527,7 +2522,7 @@ static int uvc_suspend(struct usb_interface *intf, pm_message_t message)

>         struct uvc_device *dev = usb_get_intfdata(intf);

>         struct uvc_streaming *stream;

>

> -       uvc_trace(dev, UVC_TRACE_SUSPEND, "Suspending interface %u\n",

> +       uvc_dbg(dev, SUSPEND, "Suspending interface %u\n",

>                 intf->cur_altsetting->desc.bInterfaceNumber);

>

>         /* Controls are cached on the fly so they don't need to be saved. */

> @@ -2545,8 +2540,8 @@ static int uvc_suspend(struct usb_interface *intf, pm_message_t message)

>                         return uvc_video_suspend(stream);

>         }

>

> -       uvc_trace(dev, UVC_TRACE_SUSPEND,

> -                 "Suspend: video streaming USB interface mismatch.\n");

> +       uvc_dbg(dev, SUSPEND,

> +               "Suspend: video streaming USB interface mismatch\n");

>         return -EINVAL;

>  }

>

> @@ -2556,8 +2551,8 @@ static int __uvc_resume(struct usb_interface *intf, int reset)

>         struct uvc_streaming *stream;

>         int ret = 0;

>

> -       uvc_trace(dev, UVC_TRACE_SUSPEND, "Resuming interface %u\n",

> -                 intf->cur_altsetting->desc.bInterfaceNumber);

> +       uvc_dbg(dev, SUSPEND, "Resuming interface %u\n",

> +               intf->cur_altsetting->desc.bInterfaceNumber);

>

>         if (intf->cur_altsetting->desc.bInterfaceSubClass ==

>             UVC_SC_VIDEOCONTROL) {

> @@ -2585,8 +2580,8 @@ static int __uvc_resume(struct usb_interface *intf, int reset)

>                 }

>         }

>

> -       uvc_trace(dev, UVC_TRACE_SUSPEND,

> -                 "Resume: video streaming USB interface mismatch.\n");

> +       uvc_dbg(dev, SUSPEND,

> +               "Resume: video streaming USB interface mismatch\n");

>         return -EINVAL;

>  }

>

> @@ -2636,7 +2631,7 @@ module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR);

>  MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames");

>  module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR);

>  MODULE_PARM_DESC(quirks, "Forced device quirks");

> -module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);

> +module_param_named(trace, uvc_dbg_param, uint, S_IRUGO|S_IWUSR);

>  MODULE_PARM_DESC(trace, "Trace level bitmask");

>  module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR);

>  MODULE_PARM_DESC(timeout, "Streaming control requests timeout");

> diff --git a/drivers/media/usb/uvc/uvc_isight.c b/drivers/media/usb/uvc/uvc_isight.c

> index 445c4d39aeff..2578d6ee4829 100644

> --- a/drivers/media/usb/uvc/uvc_isight.c

> +++ b/drivers/media/usb/uvc/uvc_isight.c

> @@ -50,16 +50,15 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,

>

>         if ((len >= 14 && memcmp(&data[2], hdr, 12) == 0) ||

>             (len >= 15 && memcmp(&data[3], hdr, 12) == 0)) {

> -               uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                         "iSight header found\n");

> +               uvc_dbg(stream->dev, FRAME, "iSight header found\n");

>                 is_header = 1;

>         }

>

>         /* Synchronize to the input stream by waiting for a header packet. */

>         if (buf->state != UVC_BUF_STATE_ACTIVE) {

>                 if (!is_header) {

> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                                 "Dropping packet (out of sync).\n");

> +                       uvc_dbg(stream->dev, FRAME,

> +                               "Dropping packet (out of sync)\n");

>                         return 0;

>                 }

>

> @@ -87,8 +86,8 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,

>                 buf->bytesused += nbytes;

>

>                 if (len > maxlen || buf->bytesused == buf->length) {

> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                                 "Frame complete (overflow).\n");

> +                       uvc_dbg(stream->dev, FRAME,

> +                               "Frame complete (overflow)\n");

>                         buf->state = UVC_BUF_STATE_DONE;

>                 }

>         }

> @@ -105,9 +104,9 @@ void uvc_video_decode_isight(struct uvc_urb *uvc_urb, struct uvc_buffer *buf,

>

>         for (i = 0; i < urb->number_of_packets; ++i) {

>                 if (urb->iso_frame_desc[i].status < 0) {

> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                                 "USB isochronous frame lost (%d).\n",

> -                                 urb->iso_frame_desc[i].status);

> +                       uvc_dbg(stream->dev, FRAME,

> +                               "USB isochronous frame lost (%d)\n",

> +                               urb->iso_frame_desc[i].status);

>                 }

>

>                 /* Decode the payload packet.

> diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c

> index 2255daa3e240..21a907d32bb7 100644

> --- a/drivers/media/usb/uvc/uvc_queue.c

> +++ b/drivers/media/usb/uvc/uvc_queue.c

> @@ -103,8 +103,8 @@ static int uvc_buffer_prepare(struct vb2_buffer *vb)

>

>         if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&

>             vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) {

> -               uvc_trace(uvc_queue_to_stream(queue)->dev, UVC_TRACE_CAPTURE,

> -                         "[E] Bytes used out of bounds.\n");

> +               uvc_dbg(uvc_queue_to_stream(queue)->dev, CAPTURE,

> +                       "[E] Bytes used out of bounds\n");

>                 return -EINVAL;

>         }

>

> diff --git a/drivers/media/usb/uvc/uvc_status.c b/drivers/media/usb/uvc/uvc_status.c

> index b5f493216fcd..d65666bc68f3 100644

> --- a/drivers/media/usb/uvc/uvc_status.c

> +++ b/drivers/media/usb/uvc/uvc_status.c

> @@ -93,22 +93,21 @@ static void uvc_event_streaming(struct uvc_device *dev,

>                                 struct uvc_streaming_status *status, int len)

>  {

>         if (len < 3) {

> -               uvc_trace(dev, UVC_TRACE_STATUS,

> -                         "Invalid streaming status event received.\n");

> +               uvc_dbg(dev, STATUS,

> +                       "Invalid streaming status event received\n");

>                 return;

>         }

>

>         if (status->bEvent == 0) {

>                 if (len < 4)

>                         return;

> -               uvc_trace(dev, UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n",

> -                         status->bOriginator,

> -                         status->bValue[0] ? "pressed" : "released", len);

> +               uvc_dbg(dev, STATUS, "Button (intf %u) %s len %d\n",

> +                       status->bOriginator,

> +                       status->bValue[0] ? "pressed" : "released", len);

>                 uvc_input_report_key(dev, KEY_CAMERA, status->bValue[0]);

>         } else {

> -               uvc_trace(dev, UVC_TRACE_STATUS,

> -                         "Stream %u error event %02x len %d.\n",

> -                         status->bOriginator, status->bEvent, len);

> +               uvc_dbg(dev, STATUS, "Stream %u error event %02x len %d\n",

> +                       status->bOriginator, status->bEvent, len);

>         }

>  }

>

> @@ -163,14 +162,13 @@ static bool uvc_event_control(struct urb *urb,

>

>         if (len < 6 || status->bEvent != 0 ||

>             status->bAttribute >= ARRAY_SIZE(attrs)) {

> -               uvc_trace(dev, UVC_TRACE_STATUS,

> -                         "Invalid control status event received.\n");

> +               uvc_dbg(dev, STATUS, "Invalid control status event received\n");

>                 return false;

>         }

>

> -       uvc_trace(dev, UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",

> -                 status->bOriginator, status->bSelector,

> -                 attrs[status->bAttribute], len);

> +       uvc_dbg(dev, STATUS, "Control %u/%u %s change len %d\n",

> +               status->bOriginator, status->bSelector,

> +               attrs[status->bAttribute], len);

>

>         /* Find the control. */

>         ctrl = uvc_event_find_ctrl(dev, status, &chain);

> @@ -236,9 +234,8 @@ static void uvc_status_complete(struct urb *urb)

>                 }

>

>                 default:

> -                       uvc_trace(dev, UVC_TRACE_STATUS,

> -                                 "Unknown status event type %u.\n",

> -                                 dev->status[0]);

> +                       uvc_dbg(dev, STATUS, "Unknown status event type %u\n",

> +                               dev->status[0]);

>                         break;

>                 }

>         }

> diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c

> index 3a2d17bc766b..2b8cbb4730e0 100644

> --- a/drivers/media/usb/uvc/uvc_v4l2.c

> +++ b/drivers/media/usb/uvc/uvc_v4l2.c

> @@ -75,9 +75,8 @@ static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain,

>                 break;

>

>         default:

> -               uvc_trace(chain->dev, UVC_TRACE_CONTROL,

> -                         "Unsupported V4L2 control type %u.\n",

> -                         xmap->v4l2_type);

> +               uvc_dbg(chain->dev, CONTROL,

> +                       "Unsupported V4L2 control type %u\n", xmap->v4l2_type);

>                 ret = -ENOTTY;

>                 goto free_map;

>         }

> @@ -165,11 +164,10 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,

>                 return -EINVAL;

>

>         fcc = (u8 *)&fmt->fmt.pix.pixelformat;

> -       uvc_trace(stream->dev, UVC_TRACE_FORMAT,

> -                 "Trying format 0x%08x (%c%c%c%c): %ux%u.\n",

> -                 fmt->fmt.pix.pixelformat,

> -                 fcc[0], fcc[1], fcc[2], fcc[3],

> -                 fmt->fmt.pix.width, fmt->fmt.pix.height);

> +       uvc_dbg(stream->dev, FORMAT, "Trying format 0x%08x (%c%c%c%c): %ux%u\n",

> +               fmt->fmt.pix.pixelformat,

> +               fcc[0], fcc[1], fcc[2], fcc[3],

> +               fmt->fmt.pix.width, fmt->fmt.pix.height);

>

>         /* Check if the hardware supports the requested format, use the default

>          * format otherwise.

> @@ -209,18 +207,17 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,

>         }

>

>         if (frame == NULL) {

> -               uvc_trace(stream->dev, UVC_TRACE_FORMAT,

> -                         "Unsupported size %ux%u.\n", fmt->fmt.pix.width,

> -                         fmt->fmt.pix.height);

> +               uvc_dbg(stream->dev, FORMAT, "Unsupported size %ux%u\n",

> +                       fmt->fmt.pix.width, fmt->fmt.pix.height);

>                 return -EINVAL;

>         }

>

>         /* Use the default frame interval. */

>         interval = frame->dwDefaultFrameInterval;

> -       uvc_trace(stream->dev, UVC_TRACE_FORMAT,

> -                 "Using default frame interval %u.%u us (%u.%u fps).\n",

> -                 interval / 10, interval % 10, 10000000 / interval,

> -                (100000000 / interval) % 10);

> +       uvc_dbg(stream->dev, FORMAT,

> +               "Using default frame interval %u.%u us (%u.%u fps)\n",

> +               interval / 10, interval % 10, 10000000 / interval,

> +               (100000000 / interval) % 10);

>

>         /* Set the format index, frame index and frame interval. */

>         memset(probe, 0, sizeof(*probe));

> @@ -262,9 +259,8 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,

>         }

>

>         if (i == stream->nformats) {

> -               uvc_trace(stream->dev, UVC_TRACE_FORMAT,

> -                         "Unknown bFormatIndex %u\n",

> -                         probe->bFormatIndex);

> +               uvc_dbg(stream->dev, FORMAT, "Unknown bFormatIndex %u\n",

> +                       probe->bFormatIndex);

>                 return -EINVAL;

>         }

>

> @@ -276,9 +272,8 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,

>         }

>

>         if (i == format->nframes) {

> -               uvc_trace(stream->dev, UVC_TRACE_FORMAT,

> -                         "Unknown bFrameIndex %u\n",

> -                         probe->bFrameIndex);

> +               uvc_dbg(stream->dev, FORMAT, "Unknown bFrameIndex %u\n",

> +                       probe->bFrameIndex);

>                 return -EINVAL;

>         }

>

> @@ -422,9 +417,8 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,

>

>         interval = uvc_fraction_to_interval(timeperframe.numerator,

>                 timeperframe.denominator);

> -       uvc_trace(stream->dev, UVC_TRACE_FORMAT,

> -                 "Setting frame interval to %u/%u (%u).\n",

> -                 timeperframe.numerator, timeperframe.denominator, interval);

> +       uvc_dbg(stream->dev, FORMAT, "Setting frame interval to %u/%u (%u)\n",

> +               timeperframe.numerator, timeperframe.denominator, interval);

>

>         mutex_lock(&stream->mutex);

>

> @@ -553,7 +547,7 @@ static int uvc_v4l2_open(struct file *file)

>         int ret = 0;

>

>         stream = video_drvdata(file);

> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);

> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);

>

>         ret = usb_autopm_get_interface(stream->dev->intf);

>         if (ret < 0)

> @@ -595,7 +589,7 @@ static int uvc_v4l2_release(struct file *file)

>         struct uvc_fh *handle = file->private_data;

>         struct uvc_streaming *stream = handle->stream;

>

> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);

> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);

>

>         /* Only free resources if this is a privileged handle. */

>         if (uvc_has_privileges(handle))

> @@ -1471,8 +1465,7 @@ static ssize_t uvc_v4l2_read(struct file *file, char __user *data,

>         struct uvc_fh *handle = file->private_data;

>         struct uvc_streaming *stream = handle->stream;

>

> -       uvc_trace(stream->dev, UVC_TRACE_CALLS,

> -                 "uvc_v4l2_read: not implemented.\n");

> +       uvc_dbg(stream->dev, CALLS, "%s: not implemented\n", __func__);

>         return -EINVAL;

>  }

>

> @@ -1481,7 +1474,7 @@ static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)

>         struct uvc_fh *handle = file->private_data;

>         struct uvc_streaming *stream = handle->stream;

>

> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);

> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);

>

>         return uvc_queue_mmap(&stream->queue, vma);

>  }

> @@ -1491,7 +1484,7 @@ static __poll_t uvc_v4l2_poll(struct file *file, poll_table *wait)

>         struct uvc_fh *handle = file->private_data;

>         struct uvc_streaming *stream = handle->stream;

>

> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);

> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);

>

>         return uvc_queue_poll(&stream->queue, file, wait);

>  }

> @@ -1504,7 +1497,7 @@ static unsigned long uvc_v4l2_get_unmapped_area(struct file *file,

>         struct uvc_fh *handle = file->private_data;

>         struct uvc_streaming *stream = handle->stream;

>

> -       uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);

> +       uvc_dbg(stream->dev, CALLS, "%s\n", __func__);

>

>         return uvc_queue_get_unmapped_area(&stream->queue, pgoff);

>  }

> diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c

> index e44fcb645516..7189624e1ec7 100644

> --- a/drivers/media/usb/uvc/uvc_video.c

> +++ b/drivers/media/usb/uvc/uvc_video.c

> @@ -95,7 +95,7 @@ int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,

>         if (ret != 1)

>                 return ret < 0 ? ret : -EPIPE;

>

> -       uvc_trace(dev, UVC_TRACE_CONTROL, "Control error %u\n", error);

> +       uvc_dbg(dev, CONTROL, "Control error %u\n", error);

>

>         switch (error) {

>         case 0:

> @@ -705,12 +705,12 @@ void uvc_video_clock_update(struct uvc_streaming *stream,

>

>         sof = y;

>

> -       uvc_trace(stream->dev, UVC_TRACE_CLOCK,

> -                 "%s: PTS %u y %llu.%06llu SOF %u.%06llu (x1 %u x2 %u y1 %u y2 %u SOF offset %u)\n",

> -                 stream->dev->name, buf->pts,

> -                 y >> 16, div_u64((y & 0xffff) * 1000000, 65536),

> -                 sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),

> -                 x1, x2, y1, y2, clock->sof_offset);

> +       uvc_dbg(stream->dev, CLOCK,

> +               "%s: PTS %u y %llu.%06llu SOF %u.%06llu (x1 %u x2 %u y1 %u y2 %u SOF offset %u)\n",

> +               stream->dev->name, buf->pts,

> +               y >> 16, div_u64((y & 0xffff) * 1000000, 65536),

> +               sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),

> +               x1, x2, y1, y2, clock->sof_offset);

>

>         /* Second step, SOF to host clock conversion. */

>         x1 = (uvc_video_clock_host_sof(first) + 2048) << 16;

> @@ -740,13 +740,13 @@ void uvc_video_clock_update(struct uvc_streaming *stream,

>

>         timestamp = ktime_to_ns(first->host_time) + y - y1;

>

> -       uvc_trace(stream->dev, UVC_TRACE_CLOCK,

> -                 "%s: SOF %u.%06llu y %llu ts %llu buf ts %llu (x1 %u/%u/%u x2 %u/%u/%u y1 %u y2 %u)\n",

> -                 stream->dev->name,

> -                 sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),

> -                 y, timestamp, vbuf->vb2_buf.timestamp,

> -                 x1, first->host_sof, first->dev_sof,

> -                 x2, last->host_sof, last->dev_sof, y1, y2);

> +       uvc_dbg(stream->dev, CLOCK,

> +               "%s: SOF %u.%06llu y %llu ts %llu buf ts %llu (x1 %u/%u/%u x2 %u/%u/%u y1 %u y2 %u)\n",

> +               stream->dev->name,

> +               sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),

> +               y, timestamp, vbuf->vb2_buf.timestamp,

> +               x1, first->host_sof, first->dev_sof,

> +               x2, last->host_sof, last->dev_sof, y1, y2);

>

>         /* Update the V4L2 buffer. */

>         vbuf->vb2_buf.timestamp = timestamp;

> @@ -875,15 +875,15 @@ static void uvc_video_stats_update(struct uvc_streaming *stream)

>  {

>         struct uvc_stats_frame *frame = &stream->stats.frame;

>

> -       uvc_trace(stream->dev, UVC_TRACE_STATS,

> -                 "frame %u stats: %u/%u/%u packets, %u/%u/%u pts (%searly %sinitial), %u/%u scr, last pts/stc/sof %u/%u/%u\n",

> -                 stream->sequence, frame->first_data,

> -                 frame->nb_packets - frame->nb_empty, frame->nb_packets,

> -                 frame->nb_pts_diffs, frame->last_pts_diff, frame->nb_pts,

> -                 frame->has_early_pts ? "" : "!",

> -                 frame->has_initial_pts ? "" : "!",

> -                 frame->nb_scr_diffs, frame->nb_scr,

> -                 frame->pts, frame->scr_stc, frame->scr_sof);

> +       uvc_dbg(stream->dev, STATS,

> +               "frame %u stats: %u/%u/%u packets, %u/%u/%u pts (%searly %sinitial), %u/%u scr, last pts/stc/sof %u/%u/%u\n",

> +               stream->sequence, frame->first_data,

> +               frame->nb_packets - frame->nb_empty, frame->nb_packets,

> +               frame->nb_pts_diffs, frame->last_pts_diff, frame->nb_pts,

> +               frame->has_early_pts ? "" : "!",

> +               frame->has_initial_pts ? "" : "!",

> +               frame->nb_scr_diffs, frame->nb_scr,

> +               frame->pts, frame->scr_stc, frame->scr_sof);

>

>         stream->stats.stream.nb_frames++;

>         stream->stats.stream.nb_packets += stream->stats.frame.nb_packets;

> @@ -1038,8 +1038,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,

>

>         /* Mark the buffer as bad if the error bit is set. */

>         if (data[1] & UVC_STREAM_ERR) {

> -               uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                         "Marking buffer as bad (error bit set).\n");

> +               uvc_dbg(stream->dev, FRAME,

> +                       "Marking buffer as bad (error bit set)\n");

>                 buf->error = 1;

>         }

>

> @@ -1053,8 +1053,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,

>          */

>         if (buf->state != UVC_BUF_STATE_ACTIVE) {

>                 if (fid == stream->last_fid) {

> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                                 "Dropping payload (out of sync).\n");

> +                       uvc_dbg(stream->dev, FRAME,

> +                               "Dropping payload (out of sync)\n");

>                         if ((stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) &&

>                             (data[1] & UVC_STREAM_EOF))

>                                 stream->last_fid ^= UVC_STREAM_FID;

> @@ -1085,8 +1085,8 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,

>          * previous payload had the EOF bit set.

>          */

>         if (fid != stream->last_fid && buf->bytesused != 0) {

> -               uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                         "Frame complete (FID bit toggled).\n");

> +               uvc_dbg(stream->dev, FRAME,

> +                       "Frame complete (FID bit toggled)\n");

>                 buf->state = UVC_BUF_STATE_READY;

>                 return -EAGAIN;

>         }

> @@ -1147,8 +1147,8 @@ static void uvc_video_decode_data(struct uvc_urb *uvc_urb,

>

>         /* Complete the current frame if the buffer size was exceeded. */

>         if (len > maxlen) {

> -               uvc_trace(uvc_urb->stream->dev, UVC_TRACE_FRAME,

> -                         "Frame complete (overflow).\n");

> +               uvc_dbg(uvc_urb->stream->dev, FRAME,

> +                       "Frame complete (overflow)\n");

>                 buf->error = 1;

>                 buf->state = UVC_BUF_STATE_READY;

>         }

> @@ -1161,11 +1161,9 @@ static void uvc_video_decode_end(struct uvc_streaming *stream,

>  {

>         /* Mark the buffer as done if the EOF marker is set. */

>         if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {

> -               uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                         "Frame complete (EOF found).\n");

> +               uvc_dbg(stream->dev, FRAME, "Frame complete (EOF found)\n");

>                 if (data[0] == len)

> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                                 "EOF in empty payload.\n");

> +                       uvc_dbg(stream->dev, FRAME, "EOF in empty payload\n");

>                 buf->state = UVC_BUF_STATE_READY;

>                 if (stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID)

>                         stream->last_fid ^= UVC_STREAM_FID;

> @@ -1281,13 +1279,13 @@ static void uvc_video_decode_meta(struct uvc_streaming *stream,

>         memcpy(&meta->length, mem, length);

>         meta_buf->bytesused += length + sizeof(meta->ns) + sizeof(meta->sof);

>

> -       uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                 "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC %u frame SOF %u\n",

> -                 __func__, ktime_to_ns(time), meta->sof, meta->length,

> -                 meta->flags,

> -                 has_pts ? *(u32 *)meta->buf : 0,

> -                 has_scr ? *(u32 *)scr : 0,

> -                 has_scr ? *(u32 *)(scr + 4) & 0x7ff : 0);

> +       uvc_dbg(stream->dev, FRAME,

> +               "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC %u frame SOF %u\n",

> +               __func__, ktime_to_ns(time), meta->sof, meta->length,

> +               meta->flags,

> +               has_pts ? *(u32 *)meta->buf : 0,

> +               has_scr ? *(u32 *)scr : 0,

> +               has_scr ? *(u32 *)(scr + 4) & 0x7ff : 0);

>  }

>

>  /* ------------------------------------------------------------------------

> @@ -1341,9 +1339,9 @@ static void uvc_video_decode_isoc(struct uvc_urb *uvc_urb,

>

>         for (i = 0; i < urb->number_of_packets; ++i) {

>                 if (urb->iso_frame_desc[i].status < 0) {

> -                       uvc_trace(stream->dev, UVC_TRACE_FRAME,

> -                                 "USB isochronous frame lost (%d).\n",

> -                                 urb->iso_frame_desc[i].status);

> +                       uvc_dbg(stream->dev, FRAME,

> +                               "USB isochronous frame lost (%d)\n",

> +                               urb->iso_frame_desc[i].status);

>                         /* Mark the buffer as faulty. */

>                         if (buf != NULL)

>                                 buf->error = 1;

> @@ -1631,16 +1629,16 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming *stream,

>                 }

>

>                 if (i == UVC_URBS) {

> -                       uvc_trace(stream->dev, UVC_TRACE_VIDEO,

> -                                 "Allocated %u URB buffers of %ux%u bytes each.\n",

> -                                 UVC_URBS, npackets, psize);

> +                       uvc_dbg(stream->dev, VIDEO,

> +                               "Allocated %u URB buffers of %ux%u bytes each\n",

> +                               UVC_URBS, npackets, psize);

>                         return npackets;

>                 }

>         }

>

> -       uvc_trace(stream->dev, UVC_TRACE_VIDEO,

> -                 "Failed to allocate URB buffers (%u bytes per packet).\n",

> -                 psize);

> +       uvc_dbg(stream->dev, VIDEO,

> +               "Failed to allocate URB buffers (%u bytes per packet)\n",

> +               psize);

>         return 0;

>  }

>

> @@ -1839,13 +1837,13 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream,

>                 bandwidth = stream->ctrl.dwMaxPayloadTransferSize;

>

>                 if (bandwidth == 0) {

> -                       uvc_trace(stream->dev, UVC_TRACE_VIDEO,

> -                                 "Device requested null bandwidth, defaulting to lowest.\n");

> +                       uvc_dbg(stream->dev, VIDEO,

> +                               "Device requested null bandwidth, defaulting to lowest\n");

>                         bandwidth = 1;

>                 } else {

> -                       uvc_trace(stream->dev, UVC_TRACE_VIDEO,

> -                                 "Device requested %u B/frame bandwidth.\n",

> -                                 bandwidth);

> +                       uvc_dbg(stream->dev, VIDEO,

> +                               "Device requested %u B/frame bandwidth\n",

> +                               bandwidth);

>                 }

>

>                 for (i = 0; i < intf->num_altsetting; ++i) {

> @@ -1868,14 +1866,14 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream,

>                 }

>

>                 if (best_ep == NULL) {

> -                       uvc_trace(stream->dev, UVC_TRACE_VIDEO,

> -                                 "No fast enough alt setting for requested bandwidth.\n");

> +                       uvc_dbg(stream->dev, VIDEO,

> +                               "No fast enough alt setting for requested bandwidth\n");

>                         return -EIO;

>                 }

>

> -               uvc_trace(stream->dev, UVC_TRACE_VIDEO,

> -                         "Selecting alternate setting %u (%u B/frame bandwidth).\n",

> -                         altsetting, best_psize);

> +               uvc_dbg(stream->dev, VIDEO,

> +                       "Selecting alternate setting %u (%u B/frame bandwidth)\n",

> +                       altsetting, best_psize);

>

>                 ret = usb_set_interface(stream->dev->udev, intfnum, altsetting);

>                 if (ret < 0)

> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h

> index 63f7e88c5713..1ca16c95ba25 100644

> --- a/drivers/media/usb/uvc/uvcvideo.h

> +++ b/drivers/media/usb/uvc/uvcvideo.h

> @@ -731,18 +731,18 @@ struct uvc_driver {

>   * Debugging, printing and logging

>   */

>

> -#define UVC_TRACE_PROBE                (1 << 0)

> -#define UVC_TRACE_DESCR                (1 << 1)

> -#define UVC_TRACE_CONTROL      (1 << 2)

> -#define UVC_TRACE_FORMAT       (1 << 3)

> -#define UVC_TRACE_CAPTURE      (1 << 4)

> -#define UVC_TRACE_CALLS                (1 << 5)

> -#define UVC_TRACE_FRAME                (1 << 7)

> -#define UVC_TRACE_SUSPEND      (1 << 8)

> -#define UVC_TRACE_STATUS       (1 << 9)

> -#define UVC_TRACE_VIDEO                (1 << 10)

> -#define UVC_TRACE_STATS                (1 << 11)

> -#define UVC_TRACE_CLOCK                (1 << 12)

> +#define UVC_DBG_PROBE          (1 << 0)

> +#define UVC_DBG_DESCR          (1 << 1)

> +#define UVC_DBG_CONTROL                (1 << 2)

> +#define UVC_DBG_FORMAT         (1 << 3)

> +#define UVC_DBG_CAPTURE                (1 << 4)

> +#define UVC_DBG_CALLS          (1 << 5)

> +#define UVC_DBG_FRAME          (1 << 7)

> +#define UVC_DBG_SUSPEND                (1 << 8)

> +#define UVC_DBG_STATUS         (1 << 9)

> +#define UVC_DBG_VIDEO          (1 << 10)

> +#define UVC_DBG_STATS          (1 << 11)

> +#define UVC_DBG_CLOCK          (1 << 12)

>

>  #define UVC_WARN_MINMAX                0

>  #define UVC_WARN_PROBE_DEF     1

> @@ -750,20 +750,20 @@ struct uvc_driver {

>

>  extern unsigned int uvc_clock_param;

>  extern unsigned int uvc_no_drop_param;

> -extern unsigned int uvc_trace_param;

> +extern unsigned int uvc_dbg_param;

>  extern unsigned int uvc_timeout_param;

>  extern unsigned int uvc_hw_timestamps_param;

>

> -#define uvc_trace(_dev, flag, fmt, ...)                                        \

> +#define uvc_dbg(_dev, flag, fmt, ...)                                  \

>  do {                                                                   \

> -       if (uvc_trace_param & flag)                                     \

> +       if (uvc_dbg_param & UVC_DBG_##flag)                             \

>                 dev_printk(KERN_DEBUG, &(_dev)->udev->dev, fmt,         \

>                            ##__VA_ARGS__);                              \

>  } while (0)

>

> -#define uvc_trace_cont(flag, fmt, ...)                                 \

> +#define uvc_dbg_cont(flag, fmt, ...)                                   \

>  do {                                                                   \

> -       if (uvc_trace_param & flag)                                     \

> +       if (uvc_dbg_param & UVC_DBG_##flag)                             \

>                 pr_cont(fmt, ##__VA_ARGS__);                            \

>  } while (0)

>

>



-- 
Ricardo Ribalda
diff mbox series

Patch

diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index f837ffdc8c43..bf448c213c53 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -906,8 +906,8 @@  static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,
 	}
 
 	if (ctrl == NULL && !next)
-		uvc_trace(UVC_TRACE_CONTROL, "Control 0x%08x not found.\n",
-				v4l2_id);
+		uvc_trace(chain->dev, UVC_TRACE_CONTROL,
+			  "Control 0x%08x not found.\n", v4l2_id);
 
 	return ctrl;
 }
@@ -1820,9 +1820,9 @@  static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
 	ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum,
 			     info->selector, data, 2);
 	if (ret < 0) {
-		uvc_trace(UVC_TRACE_CONTROL,
+		uvc_trace(dev, UVC_TRACE_CONTROL,
 			  "GET_LEN failed on control %pUl/%u (%d).\n",
-			   info->entity, info->selector, ret);
+			  info->entity, info->selector, ret);
 		goto done;
 	}
 
@@ -1833,7 +1833,7 @@  static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
 
 	ret = uvc_ctrl_get_flags(dev, ctrl, info);
 	if (ret < 0) {
-		uvc_trace(UVC_TRACE_CONTROL,
+		uvc_trace(dev, UVC_TRACE_CONTROL,
 			  "Failed to get flags for control %pUl/%u (%d).\n",
 			  info->entity, info->selector, ret);
 		goto done;
@@ -1841,8 +1841,8 @@  static int uvc_ctrl_fill_xu_info(struct uvc_device *dev,
 
 	uvc_ctrl_fixup_xu_info(dev, ctrl, info);
 
-	uvc_trace(UVC_TRACE_CONTROL, "XU control %pUl/%u queried: len %u, "
-		  "flags { get %u set %u auto %u }.\n",
+	uvc_trace(dev, UVC_TRACE_CONTROL,
+		  "XU control %pUl/%u queried: len %u, flags { get %u set %u auto %u }.\n",
 		  info->entity, info->selector, info->size,
 		  (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0,
 		  (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0,
@@ -1871,9 +1871,10 @@  static int uvc_ctrl_init_xu_ctrl(struct uvc_device *dev,
 
 	ret = uvc_ctrl_add_info(dev, ctrl, &info);
 	if (ret < 0)
-		uvc_trace(UVC_TRACE_CONTROL, "Failed to initialize control "
-			  "%pUl/%u on device %s entity %u\n", info.entity,
-			  info.selector, dev->udev->devpath, ctrl->entity->id);
+		uvc_trace(dev, UVC_TRACE_CONTROL,
+			  "Failed to initialize control %pUl/%u on device %s entity %u\n",
+			  info.entity, info.selector, dev->udev->devpath,
+			  ctrl->entity->id);
 
 	return ret;
 }
@@ -1901,8 +1902,8 @@  int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
 	}
 
 	if (!found) {
-		uvc_trace(UVC_TRACE_CONTROL, "Extension unit %u not found.\n",
-			xqry->unit);
+		uvc_trace(chain->dev, UVC_TRACE_CONTROL,
+			  "Extension unit %u not found.\n", xqry->unit);
 		return -ENOENT;
 	}
 
@@ -1917,8 +1918,9 @@  int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
 	}
 
 	if (!found) {
-		uvc_trace(UVC_TRACE_CONTROL, "Control %pUl/%u not found.\n",
-			entity->guid, xqry->selector);
+		uvc_trace(chain->dev, UVC_TRACE_CONTROL,
+			  "Control %pUl/%u not found.\n", entity->guid,
+			  xqry->selector);
 		return -ENOENT;
 	}
 
@@ -2066,9 +2068,10 @@  static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,
 
 	ctrl->initialized = 1;
 
-	uvc_trace(UVC_TRACE_CONTROL, "Added control %pUl/%u to device %s "
-		"entity %u\n", ctrl->info.entity, ctrl->info.selector,
-		dev->udev->devpath, ctrl->entity->id);
+	uvc_trace(dev, UVC_TRACE_CONTROL,
+		  "Added control %pUl/%u to device %s entity %u\n",
+		  ctrl->info.entity, ctrl->info.selector, dev->udev->devpath,
+		  ctrl->entity->id);
 
 	return 0;
 }
@@ -2105,9 +2108,9 @@  static int __uvc_ctrl_add_mapping(struct uvc_device *dev,
 		map->set = uvc_set_le_value;
 
 	list_add_tail(&map->list, &ctrl->info.mappings);
-	uvc_trace(UVC_TRACE_CONTROL,
-		"Adding mapping '%s' to control %pUl/%u.\n",
-		map->name, ctrl->info.entity, ctrl->info.selector);
+	uvc_trace(dev, UVC_TRACE_CONTROL,
+		  "Adding mapping '%s' to control %pUl/%u.\n",
+		  map->name, ctrl->info.entity, ctrl->info.selector);
 
 	return 0;
 }
@@ -2123,9 +2126,9 @@  int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 	int ret;
 
 	if (mapping->id & ~V4L2_CTRL_ID_MASK) {
-		uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', control "
-			"id 0x%08x is invalid.\n", mapping->name,
-			mapping->id);
+		uvc_trace(dev, UVC_TRACE_CONTROL,
+			  "Can't add mapping '%s', control id 0x%08x is invalid.\n",
+			  mapping->name, mapping->id);
 		return -EINVAL;
 	}
 
@@ -2170,9 +2173,9 @@  int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 
 	list_for_each_entry(map, &ctrl->info.mappings, list) {
 		if (mapping->id == map->id) {
-			uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', "
-				"control id 0x%08x already exists.\n",
-				mapping->name, mapping->id);
+			uvc_trace(dev, UVC_TRACE_CONTROL,
+				  "Can't add mapping '%s', control id 0x%08x already exists.\n",
+				  mapping->name, mapping->id);
 			ret = -EEXIST;
 			goto done;
 		}
@@ -2181,9 +2184,9 @@  int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,
 	/* Prevent excess memory consumption */
 	if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) {
 		atomic_dec(&dev->nmappings);
-		uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', maximum "
-			"mappings count (%u) exceeded.\n", mapping->name,
-			UVC_MAX_CONTROL_MAPPINGS);
+		uvc_trace(dev, UVC_TRACE_CONTROL,
+			  "Can't add mapping '%s', maximum mappings count (%u) exceeded.\n",
+			  mapping->name, UVC_MAX_CONTROL_MAPPINGS);
 		ret = -ENOMEM;
 		goto done;
 	}
@@ -2252,8 +2255,9 @@  static void uvc_ctrl_prune_entity(struct uvc_device *dev,
 		    !uvc_test_bit(controls, blacklist[i].index))
 			continue;
 
-		uvc_trace(UVC_TRACE_CONTROL, "%u/%u control is black listed, "
-			"removing it.\n", entity->id, blacklist[i].index);
+		uvc_trace(dev, UVC_TRACE_CONTROL,
+			  "%u/%u control is black listed, removing it.\n",
+			  entity->id, blacklist[i].index);
 
 		uvc_clear_bit(controls, blacklist[i].index);
 	}
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index c146944db091..1f72bda6036e 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -521,10 +521,10 @@  static int uvc_parse_format(struct uvc_device *dev,
 	case UVC_VS_FORMAT_FRAME_BASED:
 		n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28;
 		if (buflen < n) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-			       "interface %d FORMAT error\n",
-			       dev->udev->devnum,
-			       alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videostreaming interface %d FORMAT error\n",
+				  dev->udev->devnum,
+				  alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -585,10 +585,10 @@  static int uvc_parse_format(struct uvc_device *dev,
 
 	case UVC_VS_FORMAT_MJPEG:
 		if (buflen < 11) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-			       "interface %d FORMAT error\n",
-			       dev->udev->devnum,
-			       alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videostreaming interface %d FORMAT error\n",
+				  dev->udev->devnum,
+				  alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -601,10 +601,10 @@  static int uvc_parse_format(struct uvc_device *dev,
 
 	case UVC_VS_FORMAT_DV:
 		if (buflen < 9) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-			       "interface %d FORMAT error\n",
-			       dev->udev->devnum,
-			       alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videostreaming interface %d FORMAT error\n",
+				  dev->udev->devnum,
+				  alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -619,9 +619,9 @@  static int uvc_parse_format(struct uvc_device *dev,
 			strscpy(format->name, "HD-DV", sizeof(format->name));
 			break;
 		default:
-			uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-			       "interface %d: unknown DV format %u\n",
-			       dev->udev->devnum,
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videostreaming interface %d: unknown DV format %u\n",
+				  dev->udev->devnum,
 			       alts->desc.bInterfaceNumber, buffer[8]);
 			return -EINVAL;
 		}
@@ -648,14 +648,14 @@  static int uvc_parse_format(struct uvc_device *dev,
 	case UVC_VS_FORMAT_STREAM_BASED:
 		/* Not supported yet. */
 	default:
-		uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-		       "interface %d unsupported format %u\n",
-		       dev->udev->devnum, alts->desc.bInterfaceNumber,
-		       buffer[2]);
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "device %d videostreaming interface %d unsupported format %u\n",
+			  dev->udev->devnum, alts->desc.bInterfaceNumber,
+			  buffer[2]);
 		return -EINVAL;
 	}
 
-	uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name);
+	uvc_trace(dev, UVC_TRACE_DESCR, "Found format %s.\n", format->name);
 
 	buflen -= buffer[0];
 	buffer += buffer[0];
@@ -674,9 +674,10 @@  static int uvc_parse_format(struct uvc_device *dev,
 		n = n ? n : 3;
 
 		if (buflen < 26 + 4*n) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-			       "interface %d FRAME error\n", dev->udev->devnum,
-			       alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videostreaming interface %d FRAME error\n",
+				  dev->udev->devnum,
+				  alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -738,10 +739,10 @@  static int uvc_parse_format(struct uvc_device *dev,
 				frame->dwDefaultFrameInterval;
 		}
 
-		uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
-			frame->wWidth, frame->wHeight,
-			10000000/frame->dwDefaultFrameInterval,
-			(100000000/frame->dwDefaultFrameInterval)%10);
+		uvc_trace(dev, UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n",
+			  frame->wWidth, frame->wHeight,
+			  10000000 / frame->dwDefaultFrameInterval,
+			  (100000000 / frame->dwDefaultFrameInterval) % 10);
 
 		format->nframes++;
 		buflen -= buffer[0];
@@ -757,10 +758,10 @@  static int uvc_parse_format(struct uvc_device *dev,
 	if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE &&
 	    buffer[2] == UVC_VS_COLORFORMAT) {
 		if (buflen < 6) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-			       "interface %d COLORFORMAT error\n",
-			       dev->udev->devnum,
-			       alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videostreaming interface %d COLORFORMAT error\n",
+				  dev->udev->devnum,
+				  alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -792,16 +793,18 @@  static int uvc_parse_streaming(struct uvc_device *dev,
 
 	if (intf->cur_altsetting->desc.bInterfaceSubClass
 		!= UVC_SC_VIDEOSTREAMING) {
-		uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a "
-			"video streaming interface\n", dev->udev->devnum,
-			intf->altsetting[0].desc.bInterfaceNumber);
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "device %d interface %d isn't a video streaming interface\n",
+			  dev->udev->devnum,
+			  intf->altsetting[0].desc.bInterfaceNumber);
 		return -EINVAL;
 	}
 
 	if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) {
-		uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already "
-			"claimed\n", dev->udev->devnum,
-			intf->altsetting[0].desc.bInterfaceNumber);
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "device %d interface %d is already claimed\n",
+			  dev->udev->devnum,
+			  intf->altsetting[0].desc.bInterfaceNumber);
 		return -EINVAL;
 	}
 
@@ -823,8 +826,9 @@  static int uvc_parse_streaming(struct uvc_device *dev,
 
 			if (ep->extralen > 2 &&
 			    ep->extra[1] == USB_DT_CS_INTERFACE) {
-				uvc_trace(UVC_TRACE_DESCR, "trying extra data "
-					"from endpoint %u.\n", i);
+				uvc_trace(dev, UVC_TRACE_DESCR,
+					  "trying extra data from endpoint %u.\n",
+					  i);
 				buffer = alts->endpoint[i].extra;
 				buflen = alts->endpoint[i].extralen;
 				break;
@@ -839,8 +843,8 @@  static int uvc_parse_streaming(struct uvc_device *dev,
 	}
 
 	if (buflen <= 2) {
-		uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming "
-			"interface descriptors found.\n");
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "no class-specific streaming interface descriptors found.\n");
 		goto error;
 	}
 
@@ -857,9 +861,9 @@  static int uvc_parse_streaming(struct uvc_device *dev,
 		break;
 
 	default:
-		uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
-			"%d HEADER descriptor not found.\n", dev->udev->devnum,
-			alts->desc.bInterfaceNumber);
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "device %d videostreaming interface %d HEADER descriptor not found.\n",
+			  dev->udev->devnum, alts->desc.bInterfaceNumber);
 		goto error;
 	}
 
@@ -867,9 +871,9 @@  static int uvc_parse_streaming(struct uvc_device *dev,
 	n = buflen >= size ? buffer[size-1] : 0;
 
 	if (buflen < size + p*n) {
-		uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-			"interface %d HEADER descriptor is invalid.\n",
-			dev->udev->devnum, alts->desc.bInterfaceNumber);
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "device %d videostreaming interface %d HEADER descriptor is invalid.\n",
+			  dev->udev->devnum, alts->desc.bInterfaceNumber);
 		goto error;
 	}
 
@@ -919,10 +923,10 @@  static int uvc_parse_streaming(struct uvc_device *dev,
 
 		case UVC_VS_FORMAT_MPEG2TS:
 		case UVC_VS_FORMAT_STREAM_BASED:
-			uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming "
-				"interface %d FORMAT %u is not supported.\n",
-				dev->udev->devnum,
-				alts->desc.bInterfaceNumber, _buffer[2]);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videostreaming interface %d FORMAT %u is not supported.\n",
+				  dev->udev->devnum,
+				  alts->desc.bInterfaceNumber, _buffer[2]);
 			break;
 
 		case UVC_VS_FRAME_UNCOMPRESSED:
@@ -944,9 +948,9 @@  static int uvc_parse_streaming(struct uvc_device *dev,
 	}
 
 	if (nformats == 0) {
-		uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
-			"%d has no supported formats defined.\n",
-			dev->udev->devnum, alts->desc.bInterfaceNumber);
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "device %d videostreaming interface %d has no supported formats defined.\n",
+			  dev->udev->devnum, alts->desc.bInterfaceNumber);
 		goto error;
 	}
 
@@ -993,9 +997,10 @@  static int uvc_parse_streaming(struct uvc_device *dev,
 	}
 
 	if (buflen)
-		uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface "
-			"%d has %u bytes of trailing descriptor garbage.\n",
-			dev->udev->devnum, alts->desc.bInterfaceNumber, buflen);
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "device %d videostreaming interface %d has %u bytes of trailing descriptor garbage.\n",
+			  dev->udev->devnum, alts->desc.bInterfaceNumber,
+			  buflen);
 
 	/* Parse the alternate settings to find the maximum bandwidth. */
 	for (i = 0; i < intf->num_altsetting; ++i) {
@@ -1128,9 +1133,9 @@  static int uvc_parse_vendor_control(struct uvc_device *dev,
 		n = buflen >= 25 + p ? buffer[22+p] : 0;
 
 		if (buflen < 25 + p + 2*n) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d EXTENSION_UNIT error\n",
-				udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d EXTENSION_UNIT error\n",
+				  udev->devnum, alts->desc.bInterfaceNumber);
 			break;
 		}
 
@@ -1177,9 +1182,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		n = buflen >= 12 ? buffer[11] : 0;
 
 		if (buflen < 12 + n) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d HEADER error\n", udev->devnum,
-				alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d HEADER error\n",
+				  udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1190,9 +1195,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		for (i = 0; i < n; ++i) {
 			intf = usb_ifnum_to_if(udev, buffer[12+i]);
 			if (intf == NULL) {
-				uvc_trace(UVC_TRACE_DESCR, "device %d "
-					"interface %d doesn't exists\n",
-					udev->devnum, i);
+				uvc_trace(dev, UVC_TRACE_DESCR,
+					  "device %d interface %d doesn't exists\n",
+					  udev->devnum, i);
 				continue;
 			}
 
@@ -1202,9 +1207,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 
 	case UVC_VC_INPUT_TERMINAL:
 		if (buflen < 8) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d INPUT_TERMINAL error\n",
-				udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d INPUT_TERMINAL error\n",
+				  udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1221,11 +1226,10 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		 */
 		type = get_unaligned_le16(&buffer[4]);
 		if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d INPUT_TERMINAL %d has invalid "
-				"type 0x%04x, skipping\n", udev->devnum,
-				alts->desc.bInterfaceNumber,
-				buffer[3], type);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d INPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
+				  udev->devnum, alts->desc.bInterfaceNumber,
+				  buffer[3], type);
 			return 0;
 		}
 
@@ -1244,9 +1248,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		}
 
 		if (buflen < len + n + p) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d INPUT_TERMINAL error\n",
-				udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d INPUT_TERMINAL error\n",
+				  udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1291,9 +1295,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 
 	case UVC_VC_OUTPUT_TERMINAL:
 		if (buflen < 9) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d OUTPUT_TERMINAL error\n",
-				udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d OUTPUT_TERMINAL error\n",
+				  udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1302,10 +1306,10 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		 */
 		type = get_unaligned_le16(&buffer[4]);
 		if ((type & 0xff00) == 0) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d OUTPUT_TERMINAL %d has invalid "
-				"type 0x%04x, skipping\n", udev->devnum,
-				alts->desc.bInterfaceNumber, buffer[3], type);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d OUTPUT_TERMINAL %d has invalid type 0x%04x, skipping\n",
+				  udev->devnum, alts->desc.bInterfaceNumber,
+				  buffer[3], type);
 			return 0;
 		}
 
@@ -1329,9 +1333,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		p = buflen >= 5 ? buffer[4] : 0;
 
 		if (buflen < 5 || buflen < 6 + p) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d SELECTOR_UNIT error\n",
-				udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d SELECTOR_UNIT error\n",
+				  udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1355,9 +1359,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		p = dev->uvc_version >= 0x0110 ? 10 : 9;
 
 		if (buflen < p + n) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d PROCESSING_UNIT error\n",
-				udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d PROCESSING_UNIT error\n",
+				  udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1388,9 +1392,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		n = buflen >= 24 + p ? buffer[22+p] : 0;
 
 		if (buflen < 24 + p + n) {
-			uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol "
-				"interface %d EXTENSION_UNIT error\n",
-				udev->devnum, alts->desc.bInterfaceNumber);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "device %d videocontrol interface %d EXTENSION_UNIT error\n",
+				  udev->devnum, alts->desc.bInterfaceNumber);
 			return -EINVAL;
 		}
 
@@ -1415,8 +1419,9 @@  static int uvc_parse_standard_control(struct uvc_device *dev,
 		break;
 
 	default:
-		uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE "
-			"descriptor (%u)\n", buffer[2]);
+		uvc_trace(dev, UVC_TRACE_DESCR,
+			  "Found an unknown CS_INTERFACE descriptor (%u)\n",
+			  buffer[2]);
 		break;
 	}
 
@@ -1461,8 +1466,9 @@  static int uvc_parse_control(struct uvc_device *dev)
 		if (usb_endpoint_is_int_in(desc) &&
 		    le16_to_cpu(desc->wMaxPacketSize) >= 8 &&
 		    desc->bInterval != 0) {
-			uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint "
-				"(addr %02x).\n", desc->bEndpointAddress);
+			uvc_trace(dev, UVC_TRACE_DESCR,
+				  "Found a Status endpoint (addr %02x).\n",
+				  desc->bEndpointAddress);
 			dev->int_ep = ep;
 		}
 	}
@@ -1649,8 +1655,9 @@  static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
 		uvc_trace_cont(UVC_TRACE_PROBE, " <- XU %d", entity->id);
 
 		if (entity->bNrInPins != 1) {
-			uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more "
-				"than 1 input pin.\n", entity->id);
+			uvc_trace(chain->dev, UVC_TRACE_DESCR,
+				  "Extension unit %d has more than 1 input pin.\n",
+				  entity->id);
 			return -1;
 		}
 
@@ -1660,8 +1667,8 @@  static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
 		uvc_trace_cont(UVC_TRACE_PROBE, " <- PU %d", entity->id);
 
 		if (chain->processing != NULL) {
-			uvc_trace(UVC_TRACE_DESCR, "Found multiple "
-				"Processing Units in chain.\n");
+			uvc_trace(chain->dev, UVC_TRACE_DESCR,
+				  "Found multiple Processing Units in chain.\n");
 			return -1;
 		}
 
@@ -1676,8 +1683,8 @@  static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
 			break;
 
 		if (chain->selector != NULL) {
-			uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector "
-				"Units in chain.\n");
+			uvc_trace(chain->dev, UVC_TRACE_DESCR,
+				  "Found multiple Selector Units in chain.\n");
 			return -1;
 		}
 
@@ -1707,8 +1714,9 @@  static int uvc_scan_chain_entity(struct uvc_video_chain *chain,
 		break;
 
 	default:
-		uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type "
-			"0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity));
+		uvc_trace(chain->dev, UVC_TRACE_DESCR,
+			  "Unsupported entity type 0x%04x found in chain.\n",
+			  UVC_ENTITY_TYPE(entity));
 		return -1;
 	}
 
@@ -1734,16 +1742,17 @@  static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
 		if (forward == prev)
 			continue;
 		if (forward->chain.next || forward->chain.prev) {
-			uvc_trace(UVC_TRACE_DESCR, "Found reference to "
-				"entity %d already in chain.\n", forward->id);
+			uvc_trace(chain->dev, UVC_TRACE_DESCR,
+				  "Found reference to entity %d already in chain.\n",
+				  forward->id);
 			return -EINVAL;
 		}
 
 		switch (UVC_ENTITY_TYPE(forward)) {
 		case UVC_VC_EXTENSION_UNIT:
 			if (forward->bNrInPins != 1) {
-				uvc_trace(UVC_TRACE_DESCR, "Extension unit %d "
-					  "has more than 1 input pin.\n",
+				uvc_trace(chain->dev, UVC_TRACE_DESCR,
+					  "Extension unit %d has more than 1 input pin.\n",
 					  entity->id);
 				return -EINVAL;
 			}
@@ -1761,8 +1770,9 @@  static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
 		case UVC_OTT_MEDIA_TRANSPORT_OUTPUT:
 		case UVC_TT_STREAMING:
 			if (UVC_ENTITY_IS_ITERM(forward)) {
-				uvc_trace(UVC_TRACE_DESCR, "Unsupported input "
-					"terminal %u.\n", forward->id);
+				uvc_trace(chain->dev, UVC_TRACE_DESCR,
+					  "Unsupported input terminal %u.\n",
+					  forward->id);
 				return -EINVAL;
 			}
 
@@ -1808,16 +1818,16 @@  static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
 			id = entity->baSourceID[i];
 			term = uvc_entity_by_id(chain->dev, id);
 			if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) {
-				uvc_trace(UVC_TRACE_DESCR, "Selector unit %d "
-					"input %d isn't connected to an "
-					"input terminal\n", entity->id, i);
+				uvc_trace(chain->dev, UVC_TRACE_DESCR,
+					  "Selector unit %d input %d isn't connected to an input terminal\n",
+					  entity->id, i);
 				return -1;
 			}
 
 			if (term->chain.next || term->chain.prev) {
-				uvc_trace(UVC_TRACE_DESCR, "Found reference to "
-					"entity %d already in chain.\n",
-					term->id);
+				uvc_trace(chain->dev, UVC_TRACE_DESCR,
+					  "Found reference to entity %d already in chain.\n",
+					  term->id);
 				return -EINVAL;
 			}
 
@@ -1850,8 +1860,8 @@  static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
 
 	entity = uvc_entity_by_id(chain->dev, id);
 	if (entity == NULL) {
-		uvc_trace(UVC_TRACE_DESCR, "Found reference to "
-			"unknown entity %d.\n", id);
+		uvc_trace(chain->dev, UVC_TRACE_DESCR,
+			  "Found reference to unknown entity %d.\n", id);
 		return -EINVAL;
 	}
 
@@ -1864,7 +1874,7 @@  static int uvc_scan_chain(struct uvc_video_chain *chain,
 {
 	struct uvc_entity *entity, *prev;
 
-	uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:");
+	uvc_trace(chain->dev, UVC_TRACE_PROBE, "Scanning UVC chain:");
 
 	entity = term;
 	prev = NULL;
@@ -1872,8 +1882,9 @@  static int uvc_scan_chain(struct uvc_video_chain *chain,
 	while (entity != NULL) {
 		/* Entity must not be part of an existing chain */
 		if (entity->chain.next || entity->chain.prev) {
-			uvc_trace(UVC_TRACE_DESCR, "Found reference to "
-				"entity %d already in chain.\n", entity->id);
+			uvc_trace(chain->dev, UVC_TRACE_DESCR,
+				  "Found reference to entity %d already in chain.\n",
+				  entity->id);
 			return -EINVAL;
 		}
 
@@ -2027,7 +2038,7 @@  static int uvc_scan_fallback(struct uvc_device *dev)
 
 	list_add_tail(&chain->list, &dev->chains);
 
-	uvc_trace(UVC_TRACE_PROBE,
+	uvc_trace(dev, UVC_TRACE_PROBE,
 		  "Found a video chain by fallback heuristic (%s).\n",
 		  uvc_print_chain(chain));
 
@@ -2071,7 +2082,8 @@  static int uvc_scan_device(struct uvc_device *dev)
 			continue;
 		}
 
-		uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n",
+		uvc_trace(dev, UVC_TRACE_PROBE,
+			  "Found a valid video chain (%s).\n",
 			  uvc_print_chain(chain));
 
 		list_add_tail(&chain->list, &dev->chains);
@@ -2352,14 +2364,6 @@  static int uvc_probe(struct usb_interface *intf,
 	int function;
 	int ret;
 
-	if (id->idVendor && id->idProduct)
-		uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s "
-				"(%04x:%04x)\n", udev->devpath, id->idVendor,
-				id->idProduct);
-	else
-		uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n",
-				udev->devpath);
-
 	/* Allocate memory for the device and initialize it. */
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (dev == NULL)
@@ -2379,6 +2383,14 @@  static int uvc_probe(struct usb_interface *intf,
 	dev->quirks = uvc_quirks_param == -1
 		    ? dev->info->quirks : uvc_quirks_param;
 
+	if (id->idVendor && id->idProduct)
+		uvc_trace(dev, UVC_TRACE_PROBE,
+			  "Probing known UVC device %s (%04x:%04x)\n",
+			  udev->devpath, id->idVendor, id->idProduct);
+	else
+		uvc_trace(dev, UVC_TRACE_PROBE,
+			  "Probing generic UVC device %s\n", udev->devpath);
+
 	if (udev->product != NULL)
 		strscpy(dev->name, udev->product, sizeof(dev->name));
 	else
@@ -2421,14 +2433,14 @@  static int uvc_probe(struct usb_interface *intf,
 
 	/* Parse the Video Class control descriptor. */
 	if (uvc_parse_control(dev) < 0) {
-		uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC "
-			"descriptors.\n");
+		uvc_trace(dev, UVC_TRACE_PROBE,
+			  "Unable to parse UVC descriptors.\n");
 		goto error;
 	}
 
 	/* Parse the associated GPIOs. */
 	if (uvc_gpio_parse(dev) < 0) {
-		uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC GPIOs\n");
+		uvc_trace(dev, UVC_TRACE_PROBE, "Unable to parse UVC GPIOs\n");
 		goto error;
 	}
 
@@ -2483,7 +2495,7 @@  static int uvc_probe(struct usb_interface *intf,
 			 "Unable to request privacy GPIO IRQ %d. Continuing without privacy events\n",
 			 ret);
 
-	uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n");
+	uvc_trace(dev, UVC_TRACE_PROBE, "UVC device initialized.\n");
 	usb_enable_autosuspend(udev);
 	return 0;
 
@@ -2515,7 +2527,7 @@  static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
 	struct uvc_device *dev = usb_get_intfdata(intf);
 	struct uvc_streaming *stream;
 
-	uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n",
+	uvc_trace(dev, UVC_TRACE_SUSPEND, "Suspending interface %u\n",
 		intf->cur_altsetting->desc.bInterfaceNumber);
 
 	/* Controls are cached on the fly so they don't need to be saved. */
@@ -2533,8 +2545,8 @@  static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
 			return uvc_video_suspend(stream);
 	}
 
-	uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface "
-			"mismatch.\n");
+	uvc_trace(dev, UVC_TRACE_SUSPEND,
+		  "Suspend: video streaming USB interface mismatch.\n");
 	return -EINVAL;
 }
 
@@ -2544,8 +2556,8 @@  static int __uvc_resume(struct usb_interface *intf, int reset)
 	struct uvc_streaming *stream;
 	int ret = 0;
 
-	uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n",
-		intf->cur_altsetting->desc.bInterfaceNumber);
+	uvc_trace(dev, UVC_TRACE_SUSPEND, "Resuming interface %u\n",
+		  intf->cur_altsetting->desc.bInterfaceNumber);
 
 	if (intf->cur_altsetting->desc.bInterfaceSubClass ==
 	    UVC_SC_VIDEOCONTROL) {
@@ -2573,8 +2585,8 @@  static int __uvc_resume(struct usb_interface *intf, int reset)
 		}
 	}
 
-	uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface "
-			"mismatch.\n");
+	uvc_trace(dev, UVC_TRACE_SUSPEND,
+		  "Resume: video streaming USB interface mismatch.\n");
 	return -EINVAL;
 }
 
diff --git a/drivers/media/usb/uvc/uvc_isight.c b/drivers/media/usb/uvc/uvc_isight.c
index 135fd7fe6852..445c4d39aeff 100644
--- a/drivers/media/usb/uvc/uvc_isight.c
+++ b/drivers/media/usb/uvc/uvc_isight.c
@@ -40,6 +40,7 @@  static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
 		0xde, 0xad, 0xfa, 0xce
 	};
 
+	struct uvc_streaming *stream = uvc_queue_to_stream(queue);
 	unsigned int maxlen, nbytes;
 	u8 *mem;
 	int is_header = 0;
@@ -49,15 +50,16 @@  static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
 
 	if ((len >= 14 && memcmp(&data[2], hdr, 12) == 0) ||
 	    (len >= 15 && memcmp(&data[3], hdr, 12) == 0)) {
-		uvc_trace(UVC_TRACE_FRAME, "iSight header found\n");
+		uvc_trace(stream->dev, UVC_TRACE_FRAME,
+			  "iSight header found\n");
 		is_header = 1;
 	}
 
 	/* Synchronize to the input stream by waiting for a header packet. */
 	if (buf->state != UVC_BUF_STATE_ACTIVE) {
 		if (!is_header) {
-			uvc_trace(UVC_TRACE_FRAME, "Dropping packet (out of "
-				  "sync).\n");
+			uvc_trace(stream->dev, UVC_TRACE_FRAME,
+				  "Dropping packet (out of sync).\n");
 			return 0;
 		}
 
@@ -85,8 +87,8 @@  static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
 		buf->bytesused += nbytes;
 
 		if (len > maxlen || buf->bytesused == buf->length) {
-			uvc_trace(UVC_TRACE_FRAME, "Frame complete "
-				  "(overflow).\n");
+			uvc_trace(stream->dev, UVC_TRACE_FRAME,
+				  "Frame complete (overflow).\n");
 			buf->state = UVC_BUF_STATE_DONE;
 		}
 	}
@@ -103,8 +105,8 @@  void uvc_video_decode_isight(struct uvc_urb *uvc_urb, struct uvc_buffer *buf,
 
 	for (i = 0; i < urb->number_of_packets; ++i) {
 		if (urb->iso_frame_desc[i].status < 0) {
-			uvc_trace(UVC_TRACE_FRAME, "USB isochronous frame "
-				  "lost (%d).\n",
+			uvc_trace(stream->dev, UVC_TRACE_FRAME,
+				  "USB isochronous frame lost (%d).\n",
 				  urb->iso_frame_desc[i].status);
 		}
 
diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index cd60c6c1749e..2255daa3e240 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -32,12 +32,6 @@ 
  * the driver.
  */
 
-static inline struct uvc_streaming *
-uvc_queue_to_stream(struct uvc_video_queue *queue)
-{
-	return container_of(queue, struct uvc_streaming, queue);
-}
-
 static inline struct uvc_buffer *uvc_vbuf_to_buffer(struct vb2_v4l2_buffer *buf)
 {
 	return container_of(buf, struct uvc_buffer, buf);
@@ -109,7 +103,8 @@  static int uvc_buffer_prepare(struct vb2_buffer *vb)
 
 	if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
 	    vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) {
-		uvc_trace(UVC_TRACE_CAPTURE, "[E] Bytes used out of bounds.\n");
+		uvc_trace(uvc_queue_to_stream(queue)->dev, UVC_TRACE_CAPTURE,
+			  "[E] Bytes used out of bounds.\n");
 		return -EINVAL;
 	}
 
diff --git a/drivers/media/usb/uvc/uvc_status.c b/drivers/media/usb/uvc/uvc_status.c
index 36fa196a9258..b5f493216fcd 100644
--- a/drivers/media/usb/uvc/uvc_status.c
+++ b/drivers/media/usb/uvc/uvc_status.c
@@ -93,20 +93,20 @@  static void uvc_event_streaming(struct uvc_device *dev,
 				struct uvc_streaming_status *status, int len)
 {
 	if (len < 3) {
-		uvc_trace(UVC_TRACE_STATUS, "Invalid streaming status event "
-				"received.\n");
+		uvc_trace(dev, UVC_TRACE_STATUS,
+			  "Invalid streaming status event received.\n");
 		return;
 	}
 
 	if (status->bEvent == 0) {
 		if (len < 4)
 			return;
-		uvc_trace(UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n",
+		uvc_trace(dev, UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n",
 			  status->bOriginator,
 			  status->bValue[0] ? "pressed" : "released", len);
 		uvc_input_report_key(dev, KEY_CAMERA, status->bValue[0]);
 	} else {
-		uvc_trace(UVC_TRACE_STATUS,
+		uvc_trace(dev, UVC_TRACE_STATUS,
 			  "Stream %u error event %02x len %d.\n",
 			  status->bOriginator, status->bEvent, len);
 	}
@@ -163,12 +163,12 @@  static bool uvc_event_control(struct urb *urb,
 
 	if (len < 6 || status->bEvent != 0 ||
 	    status->bAttribute >= ARRAY_SIZE(attrs)) {
-		uvc_trace(UVC_TRACE_STATUS, "Invalid control status event "
-				"received.\n");
+		uvc_trace(dev, UVC_TRACE_STATUS,
+			  "Invalid control status event received.\n");
 		return false;
 	}
 
-	uvc_trace(UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",
+	uvc_trace(dev, UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n",
 		  status->bOriginator, status->bSelector,
 		  attrs[status->bAttribute], len);
 
@@ -236,8 +236,9 @@  static void uvc_status_complete(struct urb *urb)
 		}
 
 		default:
-			uvc_trace(UVC_TRACE_STATUS, "Unknown status event "
-				"type %u.\n", dev->status[0]);
+			uvc_trace(dev, UVC_TRACE_STATUS,
+				  "Unknown status event type %u.\n",
+				  dev->status[0]);
 			break;
 		}
 	}
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index fa06bfa174ad..3a2d17bc766b 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -75,8 +75,9 @@  static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain,
 		break;
 
 	default:
-		uvc_trace(UVC_TRACE_CONTROL, "Unsupported V4L2 control type "
-			  "%u.\n", xmap->v4l2_type);
+		uvc_trace(chain->dev, UVC_TRACE_CONTROL,
+			  "Unsupported V4L2 control type %u.\n",
+			  xmap->v4l2_type);
 		ret = -ENOTTY;
 		goto free_map;
 	}
@@ -164,10 +165,11 @@  static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 		return -EINVAL;
 
 	fcc = (u8 *)&fmt->fmt.pix.pixelformat;
-	uvc_trace(UVC_TRACE_FORMAT, "Trying format 0x%08x (%c%c%c%c): %ux%u.\n",
-			fmt->fmt.pix.pixelformat,
-			fcc[0], fcc[1], fcc[2], fcc[3],
-			fmt->fmt.pix.width, fmt->fmt.pix.height);
+	uvc_trace(stream->dev, UVC_TRACE_FORMAT,
+		  "Trying format 0x%08x (%c%c%c%c): %ux%u.\n",
+		  fmt->fmt.pix.pixelformat,
+		  fcc[0], fcc[1], fcc[2], fcc[3],
+		  fmt->fmt.pix.width, fmt->fmt.pix.height);
 
 	/* Check if the hardware supports the requested format, use the default
 	 * format otherwise.
@@ -207,16 +209,18 @@  static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 	}
 
 	if (frame == NULL) {
-		uvc_trace(UVC_TRACE_FORMAT, "Unsupported size %ux%u.\n",
-				fmt->fmt.pix.width, fmt->fmt.pix.height);
+		uvc_trace(stream->dev, UVC_TRACE_FORMAT,
+			  "Unsupported size %ux%u.\n", fmt->fmt.pix.width,
+			  fmt->fmt.pix.height);
 		return -EINVAL;
 	}
 
 	/* Use the default frame interval. */
 	interval = frame->dwDefaultFrameInterval;
-	uvc_trace(UVC_TRACE_FORMAT, "Using default frame interval %u.%u us "
-		"(%u.%u fps).\n", interval/10, interval%10, 10000000/interval,
-		(100000000/interval)%10);
+	uvc_trace(stream->dev, UVC_TRACE_FORMAT,
+		  "Using default frame interval %u.%u us (%u.%u fps).\n",
+		  interval / 10, interval % 10, 10000000 / interval,
+		 (100000000 / interval) % 10);
 
 	/* Set the format index, frame index and frame interval. */
 	memset(probe, 0, sizeof(*probe));
@@ -258,7 +262,8 @@  static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 	}
 
 	if (i == stream->nformats) {
-		uvc_trace(UVC_TRACE_FORMAT, "Unknown bFormatIndex %u\n",
+		uvc_trace(stream->dev, UVC_TRACE_FORMAT,
+			  "Unknown bFormatIndex %u\n",
 			  probe->bFormatIndex);
 		return -EINVAL;
 	}
@@ -271,7 +276,8 @@  static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 	}
 
 	if (i == format->nframes) {
-		uvc_trace(UVC_TRACE_FORMAT, "Unknown bFrameIndex %u\n",
+		uvc_trace(stream->dev, UVC_TRACE_FORMAT,
+			  "Unknown bFrameIndex %u\n",
 			  probe->bFrameIndex);
 		return -EINVAL;
 	}
@@ -416,8 +422,9 @@  static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
 
 	interval = uvc_fraction_to_interval(timeperframe.numerator,
 		timeperframe.denominator);
-	uvc_trace(UVC_TRACE_FORMAT, "Setting frame interval to %u/%u (%u).\n",
-		timeperframe.numerator, timeperframe.denominator, interval);
+	uvc_trace(stream->dev, UVC_TRACE_FORMAT,
+		  "Setting frame interval to %u/%u (%u).\n",
+		  timeperframe.numerator, timeperframe.denominator, interval);
 
 	mutex_lock(&stream->mutex);
 
@@ -545,8 +552,8 @@  static int uvc_v4l2_open(struct file *file)
 	struct uvc_fh *handle;
 	int ret = 0;
 
-	uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_open\n");
 	stream = video_drvdata(file);
+	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
 
 	ret = usb_autopm_get_interface(stream->dev->intf);
 	if (ret < 0)
@@ -588,7 +595,7 @@  static int uvc_v4l2_release(struct file *file)
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_release\n");
+	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
 
 	/* Only free resources if this is a privileged handle. */
 	if (uvc_has_privileges(handle))
@@ -1461,7 +1468,11 @@  static long uvc_v4l2_compat_ioctl32(struct file *file,
 static ssize_t uvc_v4l2_read(struct file *file, char __user *data,
 		    size_t count, loff_t *ppos)
 {
-	uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_read: not implemented.\n");
+	struct uvc_fh *handle = file->private_data;
+	struct uvc_streaming *stream = handle->stream;
+
+	uvc_trace(stream->dev, UVC_TRACE_CALLS,
+		  "uvc_v4l2_read: not implemented.\n");
 	return -EINVAL;
 }
 
@@ -1470,7 +1481,7 @@  static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_mmap\n");
+	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
 
 	return uvc_queue_mmap(&stream->queue, vma);
 }
@@ -1480,7 +1491,7 @@  static __poll_t uvc_v4l2_poll(struct file *file, poll_table *wait)
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_poll\n");
+	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
 
 	return uvc_queue_poll(&stream->queue, file, wait);
 }
@@ -1493,7 +1504,7 @@  static unsigned long uvc_v4l2_get_unmapped_area(struct file *file,
 	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
-	uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_get_unmapped_area\n");
+	uvc_trace(stream->dev, UVC_TRACE_CALLS, "%s\n", __func__);
 
 	return uvc_queue_get_unmapped_area(&stream->queue, pgoff);
 }
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index 07baead470fc..e44fcb645516 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -95,7 +95,7 @@  int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
 	if (ret != 1)
 		return ret < 0 ? ret : -EPIPE;
 
-	uvc_trace(UVC_TRACE_CONTROL, "Control error %u\n", error);
+	uvc_trace(dev, UVC_TRACE_CONTROL, "Control error %u\n", error);
 
 	switch (error) {
 	case 0:
@@ -705,8 +705,8 @@  void uvc_video_clock_update(struct uvc_streaming *stream,
 
 	sof = y;
 
-	uvc_trace(UVC_TRACE_CLOCK, "%s: PTS %u y %llu.%06llu SOF %u.%06llu "
-		  "(x1 %u x2 %u y1 %u y2 %u SOF offset %u)\n",
+	uvc_trace(stream->dev, UVC_TRACE_CLOCK,
+		  "%s: PTS %u y %llu.%06llu SOF %u.%06llu (x1 %u x2 %u y1 %u y2 %u SOF offset %u)\n",
 		  stream->dev->name, buf->pts,
 		  y >> 16, div_u64((y & 0xffff) * 1000000, 65536),
 		  sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
@@ -740,8 +740,8 @@  void uvc_video_clock_update(struct uvc_streaming *stream,
 
 	timestamp = ktime_to_ns(first->host_time) + y - y1;
 
-	uvc_trace(UVC_TRACE_CLOCK, "%s: SOF %u.%06llu y %llu ts %llu "
-		  "buf ts %llu (x1 %u/%u/%u x2 %u/%u/%u y1 %u y2 %u)\n",
+	uvc_trace(stream->dev, UVC_TRACE_CLOCK,
+		  "%s: SOF %u.%06llu y %llu ts %llu buf ts %llu (x1 %u/%u/%u x2 %u/%u/%u y1 %u y2 %u)\n",
 		  stream->dev->name,
 		  sof >> 16, div_u64(((u64)sof & 0xffff) * 1000000LLU, 65536),
 		  y, timestamp, vbuf->vb2_buf.timestamp,
@@ -875,9 +875,8 @@  static void uvc_video_stats_update(struct uvc_streaming *stream)
 {
 	struct uvc_stats_frame *frame = &stream->stats.frame;
 
-	uvc_trace(UVC_TRACE_STATS, "frame %u stats: %u/%u/%u packets, "
-		  "%u/%u/%u pts (%searly %sinitial), %u/%u scr, "
-		  "last pts/stc/sof %u/%u/%u\n",
+	uvc_trace(stream->dev, UVC_TRACE_STATS,
+		  "frame %u stats: %u/%u/%u packets, %u/%u/%u pts (%searly %sinitial), %u/%u scr, last pts/stc/sof %u/%u/%u\n",
 		  stream->sequence, frame->first_data,
 		  frame->nb_packets - frame->nb_empty, frame->nb_packets,
 		  frame->nb_pts_diffs, frame->last_pts_diff, frame->nb_pts,
@@ -1039,8 +1038,8 @@  static int uvc_video_decode_start(struct uvc_streaming *stream,
 
 	/* Mark the buffer as bad if the error bit is set. */
 	if (data[1] & UVC_STREAM_ERR) {
-		uvc_trace(UVC_TRACE_FRAME, "Marking buffer as bad (error bit "
-			  "set).\n");
+		uvc_trace(stream->dev, UVC_TRACE_FRAME,
+			  "Marking buffer as bad (error bit set).\n");
 		buf->error = 1;
 	}
 
@@ -1054,8 +1053,8 @@  static int uvc_video_decode_start(struct uvc_streaming *stream,
 	 */
 	if (buf->state != UVC_BUF_STATE_ACTIVE) {
 		if (fid == stream->last_fid) {
-			uvc_trace(UVC_TRACE_FRAME, "Dropping payload (out of "
-				"sync).\n");
+			uvc_trace(stream->dev, UVC_TRACE_FRAME,
+				  "Dropping payload (out of sync).\n");
 			if ((stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) &&
 			    (data[1] & UVC_STREAM_EOF))
 				stream->last_fid ^= UVC_STREAM_FID;
@@ -1086,8 +1085,8 @@  static int uvc_video_decode_start(struct uvc_streaming *stream,
 	 * previous payload had the EOF bit set.
 	 */
 	if (fid != stream->last_fid && buf->bytesused != 0) {
-		uvc_trace(UVC_TRACE_FRAME, "Frame complete (FID bit "
-				"toggled).\n");
+		uvc_trace(stream->dev, UVC_TRACE_FRAME,
+			  "Frame complete (FID bit toggled).\n");
 		buf->state = UVC_BUF_STATE_READY;
 		return -EAGAIN;
 	}
@@ -1148,7 +1147,8 @@  static void uvc_video_decode_data(struct uvc_urb *uvc_urb,
 
 	/* Complete the current frame if the buffer size was exceeded. */
 	if (len > maxlen) {
-		uvc_trace(UVC_TRACE_FRAME, "Frame complete (overflow).\n");
+		uvc_trace(uvc_urb->stream->dev, UVC_TRACE_FRAME,
+			  "Frame complete (overflow).\n");
 		buf->error = 1;
 		buf->state = UVC_BUF_STATE_READY;
 	}
@@ -1161,9 +1161,11 @@  static void uvc_video_decode_end(struct uvc_streaming *stream,
 {
 	/* Mark the buffer as done if the EOF marker is set. */
 	if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
-		uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
+		uvc_trace(stream->dev, UVC_TRACE_FRAME,
+			  "Frame complete (EOF found).\n");
 		if (data[0] == len)
-			uvc_trace(UVC_TRACE_FRAME, "EOF in empty payload.\n");
+			uvc_trace(stream->dev, UVC_TRACE_FRAME,
+				  "EOF in empty payload.\n");
 		buf->state = UVC_BUF_STATE_READY;
 		if (stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID)
 			stream->last_fid ^= UVC_STREAM_FID;
@@ -1279,7 +1281,7 @@  static void uvc_video_decode_meta(struct uvc_streaming *stream,
 	memcpy(&meta->length, mem, length);
 	meta_buf->bytesused += length + sizeof(meta->ns) + sizeof(meta->sof);
 
-	uvc_trace(UVC_TRACE_FRAME,
+	uvc_trace(stream->dev, UVC_TRACE_FRAME,
 		  "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC %u frame SOF %u\n",
 		  __func__, ktime_to_ns(time), meta->sof, meta->length,
 		  meta->flags,
@@ -1339,8 +1341,9 @@  static void uvc_video_decode_isoc(struct uvc_urb *uvc_urb,
 
 	for (i = 0; i < urb->number_of_packets; ++i) {
 		if (urb->iso_frame_desc[i].status < 0) {
-			uvc_trace(UVC_TRACE_FRAME, "USB isochronous frame "
-				"lost (%d).\n", urb->iso_frame_desc[i].status);
+			uvc_trace(stream->dev, UVC_TRACE_FRAME,
+				  "USB isochronous frame lost (%d).\n",
+				  urb->iso_frame_desc[i].status);
 			/* Mark the buffer as faulty. */
 			if (buf != NULL)
 				buf->error = 1;
@@ -1628,15 +1631,16 @@  static int uvc_alloc_urb_buffers(struct uvc_streaming *stream,
 		}
 
 		if (i == UVC_URBS) {
-			uvc_trace(UVC_TRACE_VIDEO, "Allocated %u URB buffers "
-				"of %ux%u bytes each.\n", UVC_URBS, npackets,
-				psize);
+			uvc_trace(stream->dev, UVC_TRACE_VIDEO,
+				  "Allocated %u URB buffers of %ux%u bytes each.\n",
+				  UVC_URBS, npackets, psize);
 			return npackets;
 		}
 	}
 
-	uvc_trace(UVC_TRACE_VIDEO, "Failed to allocate URB buffers (%u bytes "
-		"per packet).\n", psize);
+	uvc_trace(stream->dev, UVC_TRACE_VIDEO,
+		  "Failed to allocate URB buffers (%u bytes per packet).\n",
+		  psize);
 	return 0;
 }
 
@@ -1835,12 +1839,13 @@  static int uvc_video_start_transfer(struct uvc_streaming *stream,
 		bandwidth = stream->ctrl.dwMaxPayloadTransferSize;
 
 		if (bandwidth == 0) {
-			uvc_trace(UVC_TRACE_VIDEO, "Device requested null "
-				"bandwidth, defaulting to lowest.\n");
+			uvc_trace(stream->dev, UVC_TRACE_VIDEO,
+				  "Device requested null bandwidth, defaulting to lowest.\n");
 			bandwidth = 1;
 		} else {
-			uvc_trace(UVC_TRACE_VIDEO, "Device requested %u "
-				"B/frame bandwidth.\n", bandwidth);
+			uvc_trace(stream->dev, UVC_TRACE_VIDEO,
+				  "Device requested %u B/frame bandwidth.\n",
+				  bandwidth);
 		}
 
 		for (i = 0; i < intf->num_altsetting; ++i) {
@@ -1863,13 +1868,14 @@  static int uvc_video_start_transfer(struct uvc_streaming *stream,
 		}
 
 		if (best_ep == NULL) {
-			uvc_trace(UVC_TRACE_VIDEO, "No fast enough alt setting "
-				"for requested bandwidth.\n");
+			uvc_trace(stream->dev, UVC_TRACE_VIDEO,
+				  "No fast enough alt setting for requested bandwidth.\n");
 			return -EIO;
 		}
 
-		uvc_trace(UVC_TRACE_VIDEO, "Selecting alternate setting %u "
-			"(%u B/frame bandwidth).\n", altsetting, best_psize);
+		uvc_trace(stream->dev, UVC_TRACE_VIDEO,
+			  "Selecting alternate setting %u (%u B/frame bandwidth).\n",
+			  altsetting, best_psize);
 
 		ret = usb_set_interface(stream->dev->udev, intfnum, altsetting);
 		if (ret < 0)
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index a362ba6d5295..63f7e88c5713 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -754,10 +754,11 @@  extern unsigned int uvc_trace_param;
 extern unsigned int uvc_timeout_param;
 extern unsigned int uvc_hw_timestamps_param;
 
-#define uvc_trace(flag, fmt, ...)					\
+#define uvc_trace(_dev, flag, fmt, ...)					\
 do {									\
 	if (uvc_trace_param & flag)					\
-		printk(KERN_DEBUG "uvcvideo: " fmt, ##__VA_ARGS__);	\
+		dev_printk(KERN_DEBUG, &(_dev)->udev->dev, fmt,		\
+			   ##__VA_ARGS__);				\
 } while (0)
 
 #define uvc_trace_cont(flag, fmt, ...)					\
@@ -819,6 +820,12 @@  static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
 	return vb2_is_streaming(&queue->queue);
 }
 
+static inline struct uvc_streaming *
+uvc_queue_to_stream(struct uvc_video_queue *queue)
+{
+	return container_of(queue, struct uvc_streaming, queue);
+}
+
 /* V4L2 interface */
 extern const struct v4l2_ioctl_ops uvc_ioctl_ops;
 extern const struct v4l2_file_operations uvc_fops;