diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c
index 00a67326c1931dd01496a1fdb8544ae0ceb77206..39eab73b01ae9bb5e0a9c4d9667e3c99b4b51415 100644
--- 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;
 	}