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authorJaroslav Kysela <perex@perex.cz>2008-11-12 16:31:37 +0100
committerTakashi Iwai <tiwai@suse.de>2008-11-12 17:07:37 +0100
commitc2eb9c4ea383aee154e7139395872c4da629e715 (patch)
tree1a041003b3260354b6ad5e0ca728ff614f10ca01
parent9fb6198e8c574c6547fbfac0ae1eaf7894ddfdcc (diff)
ALSA: when card identification is changed, change also /proc/asound symlink
Signed-off-by: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--include/sound/info.h2
-rw-r--r--sound/core/info.c17
-rw-r--r--sound/core/init.c1
3 files changed, 20 insertions, 0 deletions
diff --git a/include/sound/info.h b/include/sound/info.h
index 8ae72e74f89..46f702a76e4 100644
--- a/include/sound/info.h
+++ b/include/sound/info.h
@@ -126,6 +126,7 @@ int snd_info_card_create(struct snd_card * card);
int snd_info_card_register(struct snd_card * card);
int snd_info_card_free(struct snd_card * card);
void snd_info_card_disconnect(struct snd_card * card);
+void snd_info_card_id_change(struct snd_card * card);
int snd_info_register(struct snd_info_entry * entry);
/* for card drivers */
@@ -160,6 +161,7 @@ static inline int snd_info_card_create(struct snd_card * card) { return 0; }
static inline int snd_info_card_register(struct snd_card * card) { return 0; }
static inline int snd_info_card_free(struct snd_card * card) { return 0; }
static inline void snd_info_card_disconnect(struct snd_card * card) { }
+static inline void snd_info_card_id_change(struct snd_card * card) { }
static inline int snd_info_register(struct snd_info_entry * entry) { return 0; }
static inline int snd_card_proc_new(struct snd_card *card, const char *name,
diff --git a/sound/core/info.c b/sound/core/info.c
index 527b207462b..70fa87189f3 100644
--- a/sound/core/info.c
+++ b/sound/core/info.c
@@ -653,6 +653,23 @@ int snd_info_card_register(struct snd_card *card)
}
/*
+ * called on card->id change
+ */
+void snd_info_card_id_change(struct snd_card *card)
+{
+ mutex_lock(&info_mutex);
+ if (card->proc_root_link) {
+ snd_remove_proc_entry(snd_proc_root, card->proc_root_link);
+ card->proc_root_link = NULL;
+ }
+ if (strcmp(card->id, card->proc_root->name))
+ card->proc_root_link = proc_symlink(card->id,
+ snd_proc_root,
+ card->proc_root->name);
+ mutex_unlock(&info_mutex);
+}
+
+/*
* de-register the card proc file
* called from init.c
*/
diff --git a/sound/core/init.c b/sound/core/init.c
index 5ff297d1d89..af1e407ca27 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -571,6 +571,7 @@ card_id_store_attr(struct device *dev, struct device_attribute *attr,
goto __exist;
}
strcpy(card->id, buf1);
+ snd_info_card_id_change(card);
mutex_unlock(&snd_card_mutex);
return count;