diff options
Diffstat (limited to 'drivers/media/video/uvc/uvc_video.c')
| -rw-r--r-- | drivers/media/video/uvc/uvc_video.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 8244167c891..ffd1158628b 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -1104,10 +1104,18 @@ int uvc_video_suspend(struct uvc_streaming *stream) * buffers, making sure userspace applications are notified of the problem * instead of waiting forever. */ -int uvc_video_resume(struct uvc_streaming *stream) +int uvc_video_resume(struct uvc_streaming *stream, int reset) { int ret; + /* If the bus has been reset on resume, set the alternate setting to 0. + * This should be the default value, but some devices crash or otherwise + * misbehave if they don't receive a SET_INTERFACE request before any + * other video control request. + */ + if (reset) + usb_set_interface(stream->dev->udev, stream->intfnum, 0); + stream->frozen = 0; ret = uvc_commit_video(stream, &stream->ctrl); |