diff mbox series

[4.4,12/28] can: gs_usb: gs_usb_probe(): use descriptors of current altsetting

Message ID 20200114094341.890032359@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Jan. 14, 2020, 10:02 a.m. UTC 
From: Johan Hovold <johan@kernel.org>

commit 2f361cd9474ab2c4ab9ac8db20faf81e66c6279b upstream.

Make sure to always use the descriptors of the current alternate setting
to avoid future issues when accessing fields that may differ between
settings.

Signed-off-by: Johan Hovold <johan@kernel.org>
Fixes: d08e973a77d1 ("can: gs_usb: Added support for the GS_USB CAN devices")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/can/usb/gs_usb.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -847,7 +847,7 @@  static int gs_usb_probe(struct usb_inter
 			     GS_USB_BREQ_HOST_FORMAT,
 			     USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
 			     1,
-			     intf->altsetting[0].desc.bInterfaceNumber,
+			     intf->cur_altsetting->desc.bInterfaceNumber,
 			     hconf,
 			     sizeof(*hconf),
 			     1000);
@@ -870,7 +870,7 @@  static int gs_usb_probe(struct usb_inter
 			     GS_USB_BREQ_DEVICE_CONFIG,
 			     USB_DIR_IN|USB_TYPE_VENDOR|USB_RECIP_INTERFACE,
 			     1,
-			     intf->altsetting[0].desc.bInterfaceNumber,
+			     intf->cur_altsetting->desc.bInterfaceNumber,
 			     dconf,
 			     sizeof(*dconf),
 			     1000);