diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index f6c48f22c672..0caa57a6782a 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -2462,6 +2462,24 @@ static const struct usb_device_id uvc_ids[] = { .bInterfaceSubClass = 1, .bInterfaceProtocol = 0, .driver_info = (kernel_ulong_t)&uvc_quirk_probe_minmax }, + /* Logitech, Webcam C910 */ + { .match_flags = USB_DEVICE_ID_MATCH_DEVICE + | USB_DEVICE_ID_MATCH_INT_INFO, + .idVendor = 0x046d, + .idProduct = 0x0821, + .bInterfaceClass = USB_CLASS_VIDEO, + .bInterfaceSubClass = 1, + .bInterfaceProtocol = 0, + .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, + /* Logitech, Webcam B910 */ + { .match_flags = USB_DEVICE_ID_MATCH_DEVICE + | USB_DEVICE_ID_MATCH_INT_INFO, + .idVendor = 0x046d, + .idProduct = 0x0823, + .bInterfaceClass = USB_CLASS_VIDEO, + .bInterfaceSubClass = 1, + .bInterfaceProtocol = 0, + .driver_info = UVC_INFO_QUIRK(UVC_QUIRK_WAKE_AUTOSUSPEND)}, /* Logitech Quickcam Fusion */ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO, diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index fe58723fc5ac..698aecf1aad4 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -1903,6 +1903,17 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream, uvc_trace(UVC_TRACE_VIDEO, "Selecting alternate setting %u " "(%u B/frame bandwidth).\n", altsetting, best_psize); + /* + * Some devices, namely the Logitech C910 and B910, are unable + * to recover from a USB autosuspend, unless the alternate + * setting of the streaming interface is toggled. + */ + if (stream->dev->quirks & UVC_QUIRK_WAKE_AUTOSUSPEND) { + usb_set_interface(stream->dev->udev, intfnum, + altsetting); + usb_set_interface(stream->dev->udev, intfnum, 0); + } + ret = usb_set_interface(stream->dev->udev, intfnum, altsetting); if (ret < 0) return ret; diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 5f137400bebd..6afbfc71bad4 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -199,6 +199,7 @@ #define UVC_QUIRK_RESTORE_CTRLS_ON_INIT 0x00000400 #define UVC_QUIRK_FORCE_Y8 0x00000800 #define UVC_QUIRK_FORCE_BPP 0x00001000 +#define UVC_QUIRK_WAKE_AUTOSUSPEND 0x00002000 /* Format flags */ #define UVC_FMT_FLAG_COMPRESSED 0x00000001