From: Andy Walls <awalls@radix.net>
Date: Thu, 6 Nov 2008 04:15:41 +0000 (-0300)
Subject: V4L/DVB (9593): cx18: Add outgoing mailbox mutexes and check for ack via waitq vs... 
X-Git-Tag: v2.6.29-rc1~556^2~310
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72c2d6d3ac91d1b9efb482ff4a8dd68e3d867965;p=pandora-kernel.git

V4L/DVB (9593): cx18: Add outgoing mailbox mutexes and check for ack via waitq vs poll

Add mutexes to ensure exclusive access for outgoing driver to CX23418 mailboxes.
Also wait on a waitq for mailbox acknowledgement from the CX23418 instead of
polling.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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