diff options
| -rw-r--r-- | include/sound/hda_codec.h | 8 | ||||
| -rw-r--r-- | sound/pci/hda/hda_bind.c | 5 | ||||
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 42 | ||||
| -rw-r--r-- | sound/pci/hda/hda_local.h | 1 |
4 files changed, 37 insertions, 19 deletions
diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h index 0e45963bb767..82d9daa17851 100644 --- a/include/sound/hda_codec.h +++ b/include/sound/hda_codec.h @@ -8,7 +8,7 @@ #ifndef __SOUND_HDA_CODEC_H #define __SOUND_HDA_CODEC_H -#include <linux/kref.h> +#include <linux/refcount.h> #include <linux/mod_devicetable.h> #include <sound/info.h> #include <sound/control.h> @@ -166,8 +166,8 @@ struct hda_pcm { bool own_chmap; /* codec driver provides own channel maps */ /* private: */ struct hda_codec *codec; - struct kref kref; struct list_head list; + unsigned int disconnected:1; }; /* codec information */ @@ -187,6 +187,8 @@ struct hda_codec { /* PCM to create, set by patch_ops.build_pcms callback */ struct list_head pcm_list_head; + refcount_t pcm_ref; + wait_queue_head_t remove_sleep; /* codec specific info */ void *spec; @@ -420,7 +422,7 @@ void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec); static inline void snd_hda_codec_pcm_get(struct hda_pcm *pcm) { - kref_get(&pcm->kref); + refcount_inc(&pcm->codec->pcm_ref); } void snd_hda_codec_pcm_put(struct hda_pcm *pcm); diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c index 1c8bffc3eec6..7153bd53e189 100644 --- a/sound/pci/hda/hda_bind.c +++ b/sound/pci/hda/hda_bind.c @@ -156,6 +156,11 @@ static int hda_codec_driver_remove(struct device *dev) return codec->bus->core.ext_ops->hdev_detach(&codec->core); } + refcount_dec(&codec->pcm_ref); + snd_hda_codec_disconnect_pcms(codec); + wait_event(codec->remove_sleep, !refcount_read(&codec->pcm_ref)); + snd_power_sync_ref(codec->bus->card); + if (codec->patch_ops.free) codec->patch_ops.free(codec); snd_hda_codec_cleanup_for_unbind(codec); diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index eda70814369b..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; diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index ea8ab8b43337..4662a47add7e 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -137,6 +137,7 @@ int __snd_hda_add_vmaster(struct hda_codec *codec, char *name, int snd_hda_codec_reset(struct hda_codec *codec); void snd_hda_codec_register(struct hda_codec *codec); void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec); +void snd_hda_codec_disconnect_pcms(struct hda_codec *codec); #define snd_hda_regmap_sync(codec) snd_hdac_regmap_sync(&(codec)->core) |