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[media] media-device: better lock media_device_unregister()
authorMauro Carvalho Chehab <mchehab@osg.samsung.com>
Tue, 15 Dec 2015 10:36:51 +0000 (08:36 -0200)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>
Mon, 11 Jan 2016 14:19:15 +0000 (12:19 -0200)
commit821ed3662913faca0653c201fa9e36fbab81f17c
treec43c57c89f2be2b72dee12183172af907436a999tree | snapshot (tar.gz zip)
parentb2ed8af910a436e12038f8ec8ca6c039f43767a4commit | diff
[media] media-device: better lock media_device_unregister()

If media_device_unregister() is called by two different
drivers, a race condition may happen, as the check if the
device is not registered is not protected.

Move the spin_lock() to happen earlier in the function, in order
to prevent such race condition.

Reported-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
drivers/media/media-device.c diff | blob | blame | history