diff options
| -rw-r--r-- | drivers/media/video/uvc/uvc_video.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index ee5e2338b41..5a2022c0152 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -138,6 +138,15 @@ static void uvc_fixup_video_ctrl(struct uvc_streaming *stream, bandwidth /= 8; bandwidth += 12; + /* The bandwidth estimate is too low for many cameras. Don't use + * maximum packet sizes lower than 1024 bytes to try and work + * around the problem. According to measurements done on two + * different camera models, the value is high enough to get most + * resolutions working while not preventing two simultaneous + * VGA streams at 15 fps. + */ + bandwidth = max_t(u32, bandwidth, 1024); + ctrl->dwMaxPayloadTransferSize = bandwidth; } } |