[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>

3 files changed, 5 insertions, 6 deletions

diff --git a/sound/core/seq/oss/seq_oss.c b/sound/core/seq/oss/seq_oss.c
index e7234135641c..92858cf8b6eb 100644
--- a/sound/core/seq/oss/seq_oss.c
+++ b/sound/core/seq/oss/seq_oss.c
@@ -303,8 +303,7 @@ register_proc(void)
 static void
 unregister_proc(void)
 {
-        if (info_entry)
-                snd_info_unregister(info_entry);
+        snd_info_free_entry(info_entry);
         info_entry = NULL;
 }
 #endif /* CONFIG_PROC_FS */
diff --git a/sound/core/seq/seq_device.c b/sound/core/seq/seq_device.c
index 102ff548ce69..b85954e956d4 100644
--- a/sound/core/seq/seq_device.c
+++ b/sound/core/seq/seq_device.c
@@ -573,7 +573,7 @@ static void __exit alsa_seq_device_exit(void)
 {
         remove_drivers();
 #ifdef CONFIG_PROC_FS
-        snd_info_unregister(info_entry);
+        snd_info_free_entry(info_entry);
 #endif
         if (num_ops)
                 snd_printk(KERN_ERR "drivers not released (%d)\n", num_ops);
diff --git a/sound/core/seq/seq_info.c b/sound/core/seq/seq_info.c
index 142e9e6882c9..8a7fe5cca1c9 100644
--- a/sound/core/seq/seq_info.c
+++ b/sound/core/seq/seq_info.c
@@ -64,9 +64,9 @@ int __init snd_seq_info_init(void)
 
 int __exit snd_seq_info_done(void)
 {
-        snd_info_unregister(queues_entry);
-        snd_info_unregister(clients_entry);
-        snd_info_unregister(timer_entry);
+        snd_info_free_entry(queues_entry);
+        snd_info_free_entry(clients_entry);
+        snd_info_free_entry(timer_entry);
         return 0;
 }
 #endif