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media: dvbdev: remove double-unlock

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[ Upstream commit 122d0e8dd050cc5dc3fb9e9b5f2dee3c5276ce35 ]

As warned by smatch:
	drivers/media/dvb-core/dvbdev.c: drivers/media/dvb-core/dvbdev.c:529 dvb_register_device() error: double unlock 'sem:&minor_rwsem'

Reported-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Stable-dep-of: 8c64f4cdf4e6 ("media: edia: dvbdev: fix a use-after-free")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2019-03-28 14:36:14 -04:00 committed by Sasha Levin
parent 3dd8abb0ed
commit cfa5ffc57e
1 changed files with 0 additions and 1 deletions
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1
drivers/media/dvb-core/dvbdev.c
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@ -536,7 +536,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
dvb_media_device_free(dvbdev);
kfree(dvbdevfops);
kfree(dvbdev);
up_write(&minor_rwsem);
mutex_unlock(&dvbdev_register_lock);
return ret;
}