From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Wed, 19 Nov 2008 09:17:44 +0000 (-0300)
Subject: V4L/DVB (9647): em28xx: void having two concurrent control URB's
X-Git-Tag: v2.6.28-rc7~1^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2a2e4910502e866833732f31ee697d15b3e56fd;p=pandora-kernel.git

V4L/DVB (9647): em28xx: void having two concurrent control URB's

Now that we have a polling task for IR, there's a race condition, since
IR can be polling while other operations are being doing. Also, we are
now sharing the same urb_buf for both read and write control urb
operations. So, we need a mutex.

Thanks to Davin Heitmueller <devin.heitmueller@gmail.com> for warning me.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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