[media] dvb-core: Release semaphore on error path dvb_register_device()

There is a missing "up_write()" here. Semaphore should be released
before returning error value.

Cc: stable@kernel.org
Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c
index 00a67326c1931dd01496a1fdb8544ae0ceb77206..39eab73b01ae9bb5e0a9c4d9667e3c99b4b51415 100644 (file)
--- a/drivers/media/dvb/dvb-core/dvbdev.c
+++ b/drivers/media/dvb/dvb-core/dvbdev.c
@@ -243,6 +243,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
        if (minor == MAX_DVB_MINORS) {
                kfree(dvbdevfops);
                kfree(dvbdev);
+               up_write(&minor_rwsem);
                mutex_unlock(&dvbdev_register_lock);
                return -EINVAL;
        }