[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, 2 insertions, 4 deletions

diff --git a/sound/synth/emux/emux_proc.c b/sound/synth/emux/emux_proc.c
index 58b9601f3ad0..59144ec026e4 100644
--- a/sound/synth/emux/emux_proc.c
+++ b/sound/synth/emux/emux_proc.c
@@ -128,10 +128,8 @@ void snd_emux_proc_init(struct snd_emux *emu, struct snd_card *card, int device)
 
 void snd_emux_proc_free(struct snd_emux *emu)
 {
-        if (emu->proc) {
-                snd_info_unregister(emu->proc);
-                emu->proc = NULL;
-        }
+        snd_info_free_entry(emu->proc);
+        emu->proc = NULL;
 }
 
 #endif /* CONFIG_PROC_FS */