From: Andreas Oberritter <obi@linuxtv.org>
Date: Wed, 24 Sep 2008 08:00:37 +0000 (-0300)
Subject: V4L/DVB (9029): Fix deadlock in demux code
X-Git-Tag: v2.6.27-rc9~6^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dda06a8e4610757def753ee3a541a0b1a1feb36b;p=pandora-kernel.git

V4L/DVB (9029): Fix deadlock in demux code

The functions dvb_dmxdev_section_callback, dvb_dmxdev_ts_callback,
dvb_dmx_swfilter_packet, dvb_dmx_swfilter_packets, dvb_dmx_swfilter and
dvb_dmx_swfilter_204 may be called from both interrupt and process
context. Therefore they need to be protected by spin_lock_irqsave()
instead of spin_lock().

This fixes a deadlock discovered by lockdep.

Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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