1 files changed, 1 insertions, 0 deletions

diff --git a/sound/core/init.c b/sound/core/init.c
index 5ee83845c5de..7bdfd19e24a8 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -232,6 +232,7 @@ int snd_card_new(struct device *parent, int idx, const char *xid,
         INIT_LIST_HEAD(&card->devices);
         init_rwsem(&card->controls_rwsem);
         rwlock_init(&card->ctl_files_rwlock);
+        mutex_init(&card->user_ctl_lock);
         INIT_LIST_HEAD(&card->controls);
         INIT_LIST_HEAD(&card->ctl_files);
         spin_lock_init(&card->files_lock);