Optimize NULL check in snd_dlobj_cache_put()

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/src/dlmisc.c b/src/dlmisc.c
index 585c7f60121c7e7cf9fd99c4e781c7f6a0e4dafc..378838220545e1092bbf0ede27f6272fcbb72845 100644 (file)
--- a/src/dlmisc.c
+++ b/src/dlmisc.c
@@ -275,6 +275,9 @@ int snd_dlobj_cache_put(void *func)
        struct dlobj_cache *c;
        unsigned int refcnt;
 
+       if (!func)
+               return -ENOENT;
+
        snd_dlobj_lock();
        list_for_each(p, &pcm_dlobj_list) {
                c = list_entry(p, struct dlobj_cache, list);