The Logitech C920 seems to be affected by the same firmware issue as the C922 that leads to invalid SOF values in packet headers. Set the INVALID_DEVICE_SOF quirk to work around the problem. Reported-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx> Closes: https://lore.kernel.org/r/5764213.DvuYhMxLoT@xxxxxxxxxxxxxx Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> --- I plan to include this in the pull request for this series. --- drivers/media/usb/uvc/uvc_driver.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 6e55f91ac17f..95bc87a80a5e 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -2580,7 +2580,8 @@ static const struct usb_device_id uvc_ids[] = { .bInterfaceClass = USB_CLASS_VIDEO, .bInterfaceSubClass = 1, .bInterfaceProtocol = 0, - .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT) }, + .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_RESTORE_CTRLS_ON_INIT + | UVC_QUIRK_INVALID_DEVICE_SOF) }, /* Logitech HD Pro Webcam C922 */ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO, -- Regards, Laurent Pinchart
