diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2010-09-11 19:56:45 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2010-10-19 11:29:56 +0200 |
| commit | 72024f1ec5164a70d84dd8cf4458fe4064a6b692 (patch) | |
| tree | fb0848c2bb91af16f46e2fca8de55675f9b1e3d2 /drivers/media/dvb/dvb-core/dvb_ca_en50221.c | |
| parent | adfedd216d9f0bc3f5bfa8aab42932301d4edc31 (diff) | |
dvb-core: kill the big kernel lock
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>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: linux-media@vger.kernel.org
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvb_ca_en50221.c')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_ca_en50221.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c index cb97e6b8543..1723a984a52 100644 --- a/drivers/media/dvb/dvb-core/dvb_ca_en50221.c +++ b/drivers/media/dvb/dvb-core/dvb_ca_en50221.c @@ -1259,13 +1259,7 @@ static int dvb_ca_en50221_io_do_ioctl(struct file *file, static long dvb_ca_en50221_io_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - int ret; - - lock_kernel(); - ret = dvb_usercopy(file, cmd, arg, dvb_ca_en50221_io_do_ioctl); - unlock_kernel(); - - return ret; + return dvb_usercopy(file, cmd, arg, dvb_ca_en50221_io_do_ioctl); } |