From: Aidan Thornton <makosoft@googlemail.com>
Date: Sun, 13 Apr 2008 18:02:24 +0000 (-0300)
Subject: V4L/DVB (7556): em28xx: fix locking on vidioc_s_fmt_cap
X-Git-Tag: v2.6.26-rc1~1084^2~158
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ea13e6e59853cab9e8ed3ac231ec5d44d8386a6;p=pandora-kernel.git

V4L/DVB (7556): em28xx: fix locking on vidioc_s_fmt_cap

Currently, vidioc_s_fmt_cap is allowed even if streaming is running on some
other fh. This is likely to cause issues.

Block use of vidioc_s_fmt_cap if someone else has claimed access to the device.

Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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