tree 54e2b56b4c46b90100b9b00493497ee389887eae
parent 3d843c92da5a1f1ab2cbc2b2e04f84d5ecedf5aa
author Andreas Oberritter <obi@linuxtv.org> 1222243237 -0300
committer Mauro Carvalho Chehab <mchehab@redhat.com> 1223171995 -0300

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>