diff options
Diffstat (limited to 'drivers/staging')
-rw-r--r-- | drivers/staging/greybus/audio_codec.c | 18 | ||||
-rw-r--r-- | drivers/staging/greybus/audio_codec.h | 1 | ||||
-rw-r--r-- | drivers/staging/greybus/audio_helper.c | 20 |
3 files changed, 12 insertions, 27 deletions
diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c index 72ace74ea605..2f05e761fb9a 100644 --- a/drivers/staging/greybus/audio_codec.c +++ b/drivers/staging/greybus/audio_codec.c @@ -807,7 +807,6 @@ int gbaudio_register_module(struct gbaudio_module_info *module) { int ret; struct snd_soc_component *comp; - struct snd_card *card; struct gbaudio_jack *jack = NULL; if (!gbcodec) { @@ -816,21 +815,20 @@ int gbaudio_register_module(struct gbaudio_module_info *module) } comp = gbcodec->component; - card = comp->card->snd_card; - down_write(&card->controls_rwsem); + mutex_lock(&gbcodec->register_mutex); if (module->num_dais) { dev_err(gbcodec->dev, "%d:DAIs not supported via gbcodec driver\n", module->num_dais); - up_write(&card->controls_rwsem); + mutex_unlock(&gbcodec->register_mutex); return -EINVAL; } ret = gbaudio_init_jack(module, comp->card); if (ret) { - up_write(&card->controls_rwsem); + mutex_unlock(&gbcodec->register_mutex); return ret; } @@ -867,7 +865,7 @@ int gbaudio_register_module(struct gbaudio_module_info *module) ret = snd_soc_dapm_new_widgets(comp->card); dev_dbg(comp->dev, "Registered %s module\n", module->name); - up_write(&card->controls_rwsem); + mutex_unlock(&gbcodec->register_mutex); return ret; } EXPORT_SYMBOL(gbaudio_register_module); @@ -935,13 +933,12 @@ static void gbaudio_codec_cleanup(struct gbaudio_module_info *module) void gbaudio_unregister_module(struct gbaudio_module_info *module) { struct snd_soc_component *comp = gbcodec->component; - struct snd_card *card = comp->card->snd_card; struct gbaudio_jack *jack, *n; int mask; dev_dbg(comp->dev, "Unregister %s module\n", module->name); - down_write(&card->controls_rwsem); + mutex_lock(&gbcodec->register_mutex); mutex_lock(&gbcodec->lock); gbaudio_codec_cleanup(module); list_del(&module->list); @@ -978,10 +975,8 @@ void gbaudio_unregister_module(struct gbaudio_module_info *module) dev_dbg(comp->dev, "Removing %d controls\n", module->num_controls); /* release control semaphore */ - up_write(&card->controls_rwsem); gbaudio_remove_component_controls(comp, module->controls, module->num_controls); - down_write(&card->controls_rwsem); } if (module->dapm_widgets) { dev_dbg(comp->dev, "Removing %d widgets\n", @@ -992,7 +987,7 @@ void gbaudio_unregister_module(struct gbaudio_module_info *module) dev_dbg(comp->dev, "Unregistered %s module\n", module->name); - up_write(&card->controls_rwsem); + mutex_unlock(&gbcodec->register_mutex); } EXPORT_SYMBOL(gbaudio_unregister_module); @@ -1012,6 +1007,7 @@ static int gbcodec_probe(struct snd_soc_component *comp) info->dev = comp->dev; INIT_LIST_HEAD(&info->module_list); mutex_init(&info->lock); + mutex_init(&info->register_mutex); INIT_LIST_HEAD(&info->dai_list); /* init dai_list used to maintain runtime stream info */ diff --git a/drivers/staging/greybus/audio_codec.h b/drivers/staging/greybus/audio_codec.h index ce15e800e607..f3f7a7ec6be4 100644 --- a/drivers/staging/greybus/audio_codec.h +++ b/drivers/staging/greybus/audio_codec.h @@ -71,6 +71,7 @@ struct gbaudio_codec_info { /* to maintain runtime stream params for each DAI */ struct list_head dai_list; struct mutex lock; + struct mutex register_mutex; }; struct gbaudio_widget { diff --git a/drivers/staging/greybus/audio_helper.c b/drivers/staging/greybus/audio_helper.c index 223987616e07..97ce5b9ad7fd 100644 --- a/drivers/staging/greybus/audio_helper.c +++ b/drivers/staging/greybus/audio_helper.c @@ -149,7 +149,6 @@ static int gbaudio_remove_controls(struct snd_card *card, struct device *dev, for (i = 0; i < num_controls; i++) { const struct snd_kcontrol_new *control = &controls[i]; struct snd_ctl_elem_id id; - struct snd_kcontrol *kctl; if (prefix) snprintf(id.name, sizeof(id.name), "%s %s", prefix, @@ -161,17 +160,10 @@ static int gbaudio_remove_controls(struct snd_card *card, struct device *dev, id.device = control->device; id.subdevice = control->subdevice; id.index = control->index; - kctl = snd_ctl_find_id(card, &id); - if (!kctl) { - dev_err(dev, "Failed to find %s\n", control->name); - continue; - } - err = snd_ctl_remove(card, kctl); - if (err < 0) { + err = snd_ctl_remove_id(card, &id); + if (err < 0) dev_err(dev, "%d: Failed to remove %s\n", err, control->name); - continue; - } } return 0; } @@ -181,11 +173,7 @@ int gbaudio_remove_component_controls(struct snd_soc_component *component, unsigned int num_controls) { struct snd_card *card = component->card->snd_card; - int err; - down_write(&card->controls_rwsem); - err = gbaudio_remove_controls(card, component->dev, controls, - num_controls, component->name_prefix); - up_write(&card->controls_rwsem); - return err; + return gbaudio_remove_controls(card, component->dev, controls, + num_controls, component->name_prefix); } |