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path: root/sound/pci/hda/hda_codec.c
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Diffstat (limited to 'sound/pci/hda/hda_codec.c')
-rw-r--r--sound/pci/hda/hda_codec.c45
1 files changed, 29 insertions, 16 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 0c4a337c9fc0..7016b48227bf 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -703,20 +703,10 @@ get_hda_cvt_setup(struct hda_codec *codec, hda_nid_t nid)
/*
* PCM device
*/
-static void release_pcm(struct kref *kref)
-{
- struct hda_pcm *pcm = container_of(kref, struct hda_pcm, kref);
-
- if (pcm->pcm)
- snd_device_free(pcm->codec->card, pcm->pcm);
- clear_bit(pcm->device, pcm->codec->bus->pcm_dev_bits);
- kfree(pcm->name);
- kfree(pcm);
-}
-
void snd_hda_codec_pcm_put(struct hda_pcm *pcm)
{
- kref_put(&pcm->kref, release_pcm);
+ if (refcount_dec_and_test(&pcm->codec->pcm_ref))
+ wake_up(&pcm->codec->remove_sleep);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_put);
@@ -731,7 +721,6 @@ struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec,
return NULL;
pcm->codec = codec;
- kref_init(&pcm->kref);
va_start(args, fmt);
pcm->name = kvasprintf(GFP_KERNEL, fmt, args);
va_end(args);
@@ -741,6 +730,7 @@ struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec,
}
list_add_tail(&pcm->list, &codec->pcm_list_head);
+ refcount_inc(&codec->pcm_ref);
return pcm;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_new);
@@ -748,15 +738,31 @@ EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_new);
/*
* codec destructor
*/
+void snd_hda_codec_disconnect_pcms(struct hda_codec *codec)
+{
+ struct hda_pcm *pcm;
+
+ list_for_each_entry(pcm, &codec->pcm_list_head, list) {
+ if (pcm->disconnected)
+ continue;
+ if (pcm->pcm)
+ snd_device_disconnect(codec->card, pcm->pcm);
+ snd_hda_codec_pcm_put(pcm);
+ pcm->disconnected = 1;
+ }
+}
+
static void codec_release_pcms(struct hda_codec *codec)
{
struct hda_pcm *pcm, *n;
list_for_each_entry_safe(pcm, n, &codec->pcm_list_head, list) {
- list_del_init(&pcm->list);
+ list_del(&pcm->list);
if (pcm->pcm)
- snd_device_disconnect(codec->card, pcm->pcm);
- snd_hda_codec_pcm_put(pcm);
+ snd_device_free(pcm->codec->card, pcm->pcm);
+ clear_bit(pcm->device, pcm->codec->bus->pcm_dev_bits);
+ kfree(pcm->name);
+ kfree(pcm);
}
}
@@ -769,6 +775,7 @@ void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec)
codec->registered = 0;
}
+ snd_hda_codec_disconnect_pcms(codec);
cancel_delayed_work_sync(&codec->jackpoll_work);
if (!codec->in_freeing)
snd_hda_ctls_clear(codec);
@@ -792,6 +799,7 @@ void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec)
remove_conn_list(codec);
snd_hdac_regmap_exit(&codec->core);
codec->configured = 0;
+ refcount_set(&codec->pcm_ref, 1); /* reset refcount */
}
EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup_for_unbind);
@@ -958,6 +966,8 @@ int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8);
INIT_LIST_HEAD(&codec->conn_list);
INIT_LIST_HEAD(&codec->pcm_list_head);
+ refcount_set(&codec->pcm_ref, 1);
+ init_waitqueue_head(&codec->remove_sleep);
INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
codec->depop_delay = -1;
@@ -1727,8 +1737,11 @@ void snd_hda_ctls_clear(struct hda_codec *codec)
{
int i;
struct hda_nid_item *items = codec->mixers.list;
+
+ down_write(&codec->card->controls_rwsem);
for (i = 0; i < codec->mixers.used; i++)
snd_ctl_remove(codec->card, items[i].kctl);
+ up_write(&codec->card->controls_rwsem);
snd_array_free(&codec->mixers);
snd_array_free(&codec->nids);
}