Make an explicit reference to UVC 1.5, explaining how the algorithm supports the different behaviour of UVC 1.1 and 1.5. Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Tested-by: HungNien Chen <hn.chen@xxxxxxxxxxxxx> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> --- drivers/media/usb/uvc/uvc_video.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index d2eb9066e4dc..def079c7a6fd 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -516,7 +516,9 @@ uvc_video_clock_decode(struct uvc_streaming *stream, struct uvc_buffer *buf, /* * To limit the amount of data, drop SCRs with an SOF identical to the - * previous one. + * previous one. This filtering is also needed to support UVC 1.5, where + * all the data packets of the same frame contains the same SOF. In that + * case only the first one will match the host_sof. */ dev_sof = get_unaligned_le16(&data[header_size - 2]); if (dev_sof == stream->clock.last_sof) -- 2.39.0.314.g84b9a713c41-goog-b4-0.11.0-dev-696ae
