From: Olivier Langlois <olivier@trillion01.com>
Date: Fri, 28 Mar 2014 05:42:38 +0000 (-0300)
Subject: [media] uvcvideo: Fix clock param realtime setting
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~25^2~174
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b35fc81e7ec552147a4fd843d0da0bbbe4ef253;p=pandora-kernel.git

[media] uvcvideo: Fix clock param realtime setting

timestamps in v4l2 buffers returned to userspace are updated in
uvc_video_clock_update() which uses timestamps fetched from
uvc_video_clock_decode() by calling unconditionally ktime_get_ts().

Hence setting the module clock param to realtime has no effect before
this patch.

This has been tested with ffmpeg:

ffmpeg -y -f v4l2 -input_format yuyv422 -video_size 640x480 -framerate 30 -i /dev/video0 \
 -f alsa -acodec pcm_s16le -ar 16000 -ac 1 -i default \
 -c:v libx264 -preset ultrafast \
 -c:a libfdk_aac \
 out.mkv

and inspecting the v4l2 input starting timestamp.

Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Olivier Langlois <olivier@trillion01.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
---

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