diff options
Diffstat (limited to 'sound/core/seq/seq_device.c')
| -rw-r--r-- | sound/core/seq/seq_device.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sound/core/seq/seq_device.c b/sound/core/seq/seq_device.c index d812dc88636..102ff548ce6 100644 --- a/sound/core/seq/seq_device.c +++ b/sound/core/seq/seq_device.c @@ -372,14 +372,19 @@ static struct ops_list * create_driver(char *id) { struct ops_list *ops; - ops = kmalloc(sizeof(*ops), GFP_KERNEL); + ops = kzalloc(sizeof(*ops), GFP_KERNEL); if (ops == NULL) return ops; - memset(ops, 0, sizeof(*ops)); /* set up driver entry */ strlcpy(ops->id, id, sizeof(ops->id)); mutex_init(&ops->reg_mutex); + /* + * The ->reg_mutex locking rules are per-driver, so we create + * separate per-driver lock classes: + */ + lockdep_set_class(&ops->reg_mutex, (struct lock_class_key *)id); + ops->driver = DRIVER_EMPTY; INIT_LIST_HEAD(&ops->dev_list); /* lock this instance */ |