From: Brandon Philips <bphilips@suse.de>
Date: Fri, 28 Mar 2008 17:18:33 +0000 (-0700)
Subject: V4L/DVB (7562): videobuf: Require spinlocks for all videobuf users
X-Git-Tag: v2.6.26-rc1~1084^2~152
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0cf4daee31d88086cf3508d1d8d1f4e451c27906;p=pandora-kernel.git

V4L/DVB (7562): videobuf: Require spinlocks for all videobuf users

A spinlock is necessary for queue_cancel to work with every driver in the tree.
Otherwise a race exists between IRQ handlers removing buffers from the queue
and queue_cancel invalidating the queue.

Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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