diff mbox series

usb: core: hub: Disable autosuspend for Cypress CY7C65632

Message ID 20210614155524.2228800-1-andrew@lunn.ch
State New
Headers show
Series usb: core: hub: Disable autosuspend for Cypress CY7C65632 | expand

Commit Message

Andrew Lunn June 14, 2021, 3:55 p.m. UTC 
The Cypress CY7C65632 appears to have an issue with auto suspend and
detecting devices, not too dissimilar to the SMSC 5534B hub. It is
easiest to reproduce by connecting multiple mass storage devices to
the hub at the same time. On a Lenovo Yoga, around 1 in 3 attempts
result in the devices not being detected. It is however possible to
make them appear using lsusb -v.

Disabling autosuspend for this hub resolves the issue.

Cc: stable@vger.kernel.org
Fixes: 1208f9e1d758 ("USB: hub: Fix the broken detection of USB3 device in SMSC hub")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/usb/core/hub.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 3bd379d5d1be..d1efc7141333 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -41,6 +41,8 @@ 
 #define USB_VENDOR_GENESYS_LOGIC		0x05e3
 #define USB_VENDOR_SMSC				0x0424
 #define USB_PRODUCT_USB5534B			0x5534
+#define USB_VENDOR_CYPRESS			0x04b4
+#define USB_PRODUCT_CY7C65632			0x6570
 #define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND	0x01
 #define HUB_QUIRK_DISABLE_AUTOSUSPEND		0x02
 
@@ -5719,6 +5721,11 @@  static const struct usb_device_id hub_id_table[] = {
       .idProduct = USB_PRODUCT_USB5534B,
       .bInterfaceClass = USB_CLASS_HUB,
       .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
+    { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+                   | USB_DEVICE_ID_MATCH_PRODUCT,
+      .idVendor = USB_VENDOR_CYPRESS,
+      .idProduct = USB_PRODUCT_CY7C65632,
+      .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
     { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
 			| USB_DEVICE_ID_MATCH_INT_CLASS,
       .idVendor = USB_VENDOR_GENESYS_LOGIC,