[ALSA] Fix disconnection of proc interface

- Add the linked list to each proc entry to enable a single-shot
  disconnection (unregister)
- Deprecate snd_info_unregister(), use snd_info_free_entry()
- Removed NULL checks of snd_info_free_entry()

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 1 insertions, 2 deletions

diff --git a/sound/drivers/opl4/opl4_proc.c b/sound/drivers/opl4/opl4_proc.c
index e552ec34166f..11dd811771a4 100644
--- a/sound/drivers/opl4/opl4_proc.c
+++ b/sound/drivers/opl4/opl4_proc.c
@@ -159,8 +159,7 @@ int snd_opl4_create_proc(struct snd_opl4 *opl4)
 
 void snd_opl4_free_proc(struct snd_opl4 *opl4)
 {
-        if (opl4->proc_entry)
-                snd_info_unregister(opl4->proc_entry);
+        snd_info_free_entry(opl4->proc_entry);
 }
 
 #endif /* CONFIG_PROC_FS */