From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Mon, 21 Jan 2013 09:51:41 +0000 (-0300)
Subject: [media] uvcvideo: Implement videobuf2 .wait_prepare and .wait_finish operations
X-Git-Tag: v3.9-rc1~93^2~60
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05c79d0d1d0d44c2195d63d1e7c62e358eadeadf;p=pandora-kernel.git

[media] uvcvideo: Implement videobuf2 .wait_prepare and .wait_finish operations

Those optional operations are used to release and reacquire the queue
lock when videobuf2 needs to perform operations that sleep for a long
time, such as waiting for a buffer to be complete. Implement them to
avoid blocking qbuf or streamoff calls when a dqbuf is in progress.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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