V4L/DVB: dvb-core: kill the big kernel lock

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The dvb core only uses the big kernel lock in the open
and ioctl functions, which means it can be replaced with
a dvb specific mutex. Fortunately, all the ioctl functions
go through dvb_usercopy, so we can move the serialization
in there.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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This commit is contained in:

Arnd Bergmann 2010-09-14 16:35:07 -03:00 • committed by Mauro Carvalho Chehab

parent 634c693163

commit e4e62b35b8

4 changed files with 11 additions and 40 deletions

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17

drivers/media/dvb/dvb-core/dmxdev.c

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8

drivers/media/dvb/dvb-core/dvb_ca_en50221.c

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9

drivers/media/dvb/dvb-core/dvb_net.c

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17

drivers/media/dvb/dvb-core/dvbdev.c

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