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V4L/DVB (7562): videobuf: Require spinlocks for all videobuf users
authorBrandon Philips <bphilips@suse.de>
Fri, 28 Mar 2008 17:18:33 +0000 (10:18 -0700)
committerMauro Carvalho Chehab <mchehab@infradead.org>
Thu, 24 Apr 2008 17:09:16 +0000 (14:09 -0300)
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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