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