[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, 6 insertions, 12 deletions

diff --git a/sound/pci/ac97/ac97_proc.c b/sound/pci/ac97/ac97_proc.c
index 2118df50b9d6..a3fdd7da911c 100644
--- a/sound/pci/ac97/ac97_proc.c
+++ b/sound/pci/ac97/ac97_proc.c
@@ -457,14 +457,10 @@ void snd_ac97_proc_init(struct snd_ac97 * ac97)
 
 void snd_ac97_proc_done(struct snd_ac97 * ac97)
 {
-        if (ac97->proc_regs) {
-                snd_info_unregister(ac97->proc_regs);
-                ac97->proc_regs = NULL;
-        }
-        if (ac97->proc) {
-                snd_info_unregister(ac97->proc);
-                ac97->proc = NULL;
-        }
+        snd_info_free_entry(ac97->proc_regs);
+        ac97->proc_regs = NULL;
+        snd_info_free_entry(ac97->proc);
+        ac97->proc = NULL;
 }
 
 void snd_ac97_bus_proc_init(struct snd_ac97_bus * bus)
@@ -485,8 +481,6 @@ void snd_ac97_bus_proc_init(struct snd_ac97_bus * bus)
 
 void snd_ac97_bus_proc_done(struct snd_ac97_bus * bus)
 {
-        if (bus->proc) {
-                snd_info_unregister(bus->proc);
-                bus->proc = NULL;
-        }
+        snd_info_free_entry(bus->proc);
+        bus->proc = NULL;
 }