[alsa-devel] [PATCH 1/3] ASoC: compress: Only call free for components which have been opened
The core should only call free on a component if said component has already had open called on it. This is not presently the case and most compressed drivers in the kernel assume it will be. This causes null pointer dereferences in the drivers as they attempt clean up for stuff that was never put in place.
This is fixed by aborting calling open callbacks once a failure is encountered and then during clean up only iterating through the component list to that point.
This is a fairly quick fix to the issue, to allow backporting. There is more refactoring to follow to tidy the code up a little.
Fixes: 9e7e3738ab0e ("ASoC: snd_soc_component_driver has snd_compr_ops") Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com --- sound/soc/soc-compress.c | 52 ++++++++++++++++++++++++++---------------------- 1 file changed, 28 insertions(+), 24 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index 82402688bd8e..948505f74229 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -33,7 +33,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream) struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - int ret = 0, __ret; + int ret;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
@@ -68,16 +68,15 @@ static int soc_compr_open(struct snd_compr_stream *cstream) !component->driver->compr_ops->open) continue;
- __ret = component->driver->compr_ops->open(cstream); - if (__ret < 0) { + ret = component->driver->compr_ops->open(cstream); + if (ret < 0) { dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", - component->name, __ret); - ret = __ret; + component->name, ret); + goto machine_err; } } - if (ret < 0) - goto machine_err; + component = NULL;
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { ret = rtd->dai_link->compr_ops->startup(cstream); @@ -97,17 +96,20 @@ static int soc_compr_open(struct snd_compr_stream *cstream)
machine_err: for_each_rtdcom(rtd, rtdcom) { - component = rtdcom->component; + struct snd_soc_component *err_comp = rtdcom->component; + + if (err_comp == component) + break;
/* ignore duplication for now */ - if (platform && (component == &platform->component)) + if (platform && (err_comp == &platform->component)) continue;
- if (!component->driver->compr_ops || - !component->driver->compr_ops->free) + if (!err_comp->driver->compr_ops || + !err_comp->driver->compr_ops->free) continue;
- component->driver->compr_ops->free(cstream); + err_comp->driver->compr_ops->free(cstream); }
if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free) @@ -132,7 +134,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; int stream; - int ret = 0, __ret; + int ret;
if (cstream->direction == SND_COMPRESS_PLAYBACK) stream = SNDRV_PCM_STREAM_PLAYBACK; @@ -172,16 +174,15 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) !component->driver->compr_ops->open) continue;
- __ret = component->driver->compr_ops->open(cstream); - if (__ret < 0) { + ret = component->driver->compr_ops->open(cstream); + if (ret < 0) { dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", - component->name, __ret); - ret = __ret; + component->name, ret); + goto machine_err; } } - if (ret < 0) - goto machine_err; + component = NULL;
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { ret = fe->dai_link->compr_ops->startup(cstream); @@ -236,17 +237,20 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) fe->dai_link->compr_ops->shutdown(cstream); machine_err: for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; + struct snd_soc_component *err_comp = rtdcom->component; + + if (err_comp == component) + break;
/* ignore duplication for now */ - if (platform && (component == &platform->component)) + if (platform && (err_comp == &platform->component)) continue;
- if (!component->driver->compr_ops || - !component->driver->compr_ops->free) + if (!err_comp->driver->compr_ops || + !err_comp->driver->compr_ops->free) continue;
- component->driver->compr_ops->free(cstream); + err_comp->driver->compr_ops->free(cstream); }
if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free)
As all drivers have been moved over to the new generic component code remove the now unused platform specific code.
Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com --- include/sound/soc.h | 103 +-------------------- sound/soc/soc-compress.c | 227 ++--------------------------------------------- sound/soc/soc-core.c | 214 -------------------------------------------- sound/soc/soc-devres.c | 35 -------- sound/soc/soc-io.c | 21 ----- sound/soc/soc-pcm.c | 119 +------------------------ 6 files changed, 12 insertions(+), 707 deletions(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h index ad266d7e9553..9ea99e5d3c8e 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -401,9 +401,7 @@ struct snd_soc_ops; struct snd_soc_pcm_runtime; struct snd_soc_dai; struct snd_soc_dai_driver; -struct snd_soc_platform; struct snd_soc_dai_link; -struct snd_soc_platform_driver; struct snd_soc_codec; struct snd_soc_codec_driver; struct snd_soc_component; @@ -455,15 +453,6 @@ static inline int snd_soc_resume(struct device *dev) } #endif int snd_soc_poweroff(struct device *dev); -int snd_soc_register_platform(struct device *dev, - const struct snd_soc_platform_driver *platform_drv); -int devm_snd_soc_register_platform(struct device *dev, - const struct snd_soc_platform_driver *platform_drv); -void snd_soc_unregister_platform(struct device *dev); -int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform, - const struct snd_soc_platform_driver *platform_drv); -void snd_soc_remove_platform(struct snd_soc_platform *platform); -struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev); int snd_soc_register_codec(struct device *dev, const struct snd_soc_codec_driver *codec_drv, struct snd_soc_dai_driver *dai_drv, int num_dai); @@ -485,10 +474,6 @@ struct snd_soc_component *snd_soc_lookup_component(struct device *dev, int snd_soc_cache_init(struct snd_soc_codec *codec); int snd_soc_cache_exit(struct snd_soc_codec *codec);
-int snd_soc_platform_read(struct snd_soc_platform *platform, - unsigned int reg); -int snd_soc_platform_write(struct snd_soc_platform *platform, - unsigned int reg, unsigned int val); int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num); #ifdef CONFIG_SND_SOC_COMPRESS int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num); @@ -628,8 +613,6 @@ int snd_soc_add_component_controls(struct snd_soc_component *component, const struct snd_kcontrol_new *controls, unsigned int num_controls); int snd_soc_add_codec_controls(struct snd_soc_codec *codec, const struct snd_kcontrol_new *controls, unsigned int num_controls); -int snd_soc_add_platform_controls(struct snd_soc_platform *platform, - const struct snd_kcontrol_new *controls, unsigned int num_controls); int snd_soc_add_card_controls(struct snd_soc_card *soc_card, const struct snd_kcontrol_new *controls, int num_controls); int snd_soc_add_dai_controls(struct snd_soc_dai *dai, @@ -996,39 +979,12 @@ struct snd_soc_codec_driver { bool ignore_pmdown_time; /* Doesn't benefit from pmdown delay */ };
-/* SoC platform interface */ -struct snd_soc_platform_driver { - - int (*probe)(struct snd_soc_platform *); - int (*remove)(struct snd_soc_platform *); - struct snd_soc_component_driver component_driver; - - /* pcm creation and destruction */ - int (*pcm_new)(struct snd_soc_pcm_runtime *); - void (*pcm_free)(struct snd_pcm *); - - /* platform stream pcm ops */ - const struct snd_pcm_ops *ops; - - /* platform stream compress ops */ - const struct snd_compr_ops *compr_ops; -}; - struct snd_soc_dai_link_component { const char *name; struct device_node *of_node; const char *dai_name; };
-struct snd_soc_platform { - struct device *dev; - const struct snd_soc_platform_driver *driver; - - struct list_head list; - - struct snd_soc_component component; -}; - struct snd_soc_dai_link { /* config - must be set by machine driver */ const char *name; /* Codec name */ @@ -1277,7 +1233,6 @@ struct snd_soc_pcm_runtime { struct snd_pcm *pcm; struct snd_compr *compr; struct snd_soc_codec *codec; - struct snd_soc_platform *platform; /* will be removed */ struct snd_soc_dai *codec_dai; struct snd_soc_dai *cpu_dai;
@@ -1359,19 +1314,6 @@ static inline struct snd_soc_codec *snd_soc_component_to_codec( }
/** - * snd_soc_component_to_platform() - Casts a component to the platform it is embedded in - * @component: The component to cast to a platform - * - * This function must only be used on components that are known to be platforms. - * Otherwise the behavior is undefined. - */ -static inline struct snd_soc_platform *snd_soc_component_to_platform( - struct snd_soc_component *component) -{ - return container_of(component, struct snd_soc_platform, component); -} - -/** * snd_soc_dapm_to_component() - Casts a DAPM context to the component it is * embedded in * @dapm: The DAPM context to cast to the component @@ -1400,20 +1342,6 @@ static inline struct snd_soc_codec *snd_soc_dapm_to_codec( }
/** - * snd_soc_dapm_to_platform() - Casts a DAPM context to the platform it is - * embedded in - * @dapm: The DAPM context to cast to the platform. - * - * This function must only be used on DAPM contexts that are known to be part of - * a platform (e.g. in a platform driver). Otherwise the behavior is undefined. - */ -static inline struct snd_soc_platform *snd_soc_dapm_to_platform( - struct snd_soc_dapm_context *dapm) -{ - return snd_soc_component_to_platform(snd_soc_dapm_to_component(dapm)); -} - -/** * snd_soc_component_get_dapm() - Returns the DAPM context associated with a * component * @component: The component for which to get the DAPM context @@ -1673,17 +1601,6 @@ static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec) return snd_soc_component_get_drvdata(&codec->component); }
-static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform, - void *data) -{ - snd_soc_component_set_drvdata(&platform->component, data); -} - -static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform) -{ - return snd_soc_component_get_drvdata(&platform->component); -} - static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card) { INIT_LIST_HEAD(&card->widgets); @@ -1746,9 +1663,9 @@ static inline bool snd_soc_codec_is_active(struct snd_soc_codec *codec) * @kcontrol: The control for which to get the component * * Note: This function will work correctly if the control has been registered - * for a component. Either with snd_soc_add_codec_controls() or - * snd_soc_add_platform_controls() or via table based setup for either a - * CODEC, a platform or component driver. Otherwise the behavior is undefined. + * for a component. With snd_soc_add_codec_controls() or via table based + * setup for either a CODEC or component driver. Otherwise the behavior is + * undefined. */ static inline struct snd_soc_component *snd_soc_kcontrol_component( struct snd_kcontrol *kcontrol) @@ -1770,20 +1687,6 @@ static inline struct snd_soc_codec *snd_soc_kcontrol_codec( return snd_soc_component_to_codec(snd_soc_kcontrol_component(kcontrol)); }
-/** - * snd_soc_kcontrol_platform() - Returns the platform that registered the control - * @kcontrol: The control for which to get the platform - * - * Note: This function will only work correctly if the control has been - * registered with snd_soc_add_platform_controls() or via table based setup of - * a snd_soc_platform_driver. Otherwise the behavior is undefined. - */ -static inline struct snd_soc_platform *snd_soc_kcontrol_platform( - struct snd_kcontrol *kcontrol) -{ - return snd_soc_component_to_platform(snd_soc_kcontrol_component(kcontrol)); -} - int snd_soc_util_init(void); void snd_soc_util_exit(void);
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index 948505f74229..abc00c6cc2d7 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -29,7 +29,6 @@ static int soc_compr_open(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -47,23 +46,9 @@ static int soc_compr_open(struct snd_compr_stream *cstream) } }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->open) { - ret = platform->driver->compr_ops->open(cstream); - if (ret < 0) { - dev_err(platform->dev, - "Compress ASoC: can't open platform %s: %d\n", - platform->component.name, ret); - goto plat_err; - } - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->open) continue; @@ -101,10 +86,6 @@ static int soc_compr_open(struct snd_compr_stream *cstream) if (err_comp == component) break;
- /* ignore duplication for now */ - if (platform && (err_comp == &platform->component)) - continue; - if (!err_comp->driver->compr_ops || !err_comp->driver->compr_ops->free) continue; @@ -112,9 +93,6 @@ static int soc_compr_open(struct snd_compr_stream *cstream) err_comp->driver->compr_ops->free(cstream); }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free) - platform->driver->compr_ops->free(cstream); -plat_err: if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); out: @@ -127,7 +105,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_soc_pcm_runtime *fe = cstream->private_data; struct snd_pcm_substream *fe_substream = fe->pcm->streams[cstream->direction].substream; - struct snd_soc_platform *platform = fe->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; @@ -153,23 +130,9 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) } }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->open) { - ret = platform->driver->compr_ops->open(cstream); - if (ret < 0) { - dev_err(platform->dev, - "Compress ASoC: can't open platform %s: %d\n", - platform->component.name, ret); - goto plat_err; - } - } - for_each_rtdcom(fe, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->open) continue; @@ -242,10 +205,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) if (err_comp == component) break;
- /* ignore duplication for now */ - if (platform && (err_comp == &platform->component)) - continue; - if (!err_comp->driver->compr_ops || !err_comp->driver->compr_ops->free) continue; @@ -253,9 +212,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) err_comp->driver->compr_ops->free(cstream); }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free) - platform->driver->compr_ops->free(cstream); -plat_err: if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); out: @@ -296,7 +252,6 @@ static void close_delayed_work(struct work_struct *work) static int soc_compr_free(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -326,10 +281,6 @@ static int soc_compr_free(struct snd_compr_stream *cstream) for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->free) continue; @@ -337,9 +288,6 @@ static int soc_compr_free(struct snd_compr_stream *cstream) component->driver->compr_ops->free(cstream); }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free) - platform->driver->compr_ops->free(cstream); - if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
@@ -368,7 +316,6 @@ static int soc_compr_free(struct snd_compr_stream *cstream) static int soc_compr_free_fe(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *fe = cstream->private_data; - struct snd_soc_platform *platform = fe->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; @@ -408,16 +355,9 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream);
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free) - platform->driver->compr_ops->free(cstream); - for_each_rtdcom(fe, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->free) continue; @@ -436,7 +376,6 @@ static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) {
struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *codec_dai = rtd->codec_dai; @@ -445,19 +384,9 @@ static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->trigger) { - ret = platform->driver->compr_ops->trigger(cstream, cmd); - if (ret < 0) - goto out; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->trigger) continue; @@ -489,7 +418,6 @@ static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd) { struct snd_soc_pcm_runtime *fe = cstream->private_data; - struct snd_soc_platform *platform = fe->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; @@ -498,19 +426,9 @@ static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd) if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN || cmd == SND_COMPR_TRIGGER_DRAIN) {
- if (platform && - platform->driver->compr_ops && - platform->driver->compr_ops->trigger) - return platform->driver->compr_ops->trigger(cstream, - cmd); - for_each_rtdcom(fe, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->trigger) continue; @@ -536,19 +454,9 @@ static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd) goto out; }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->trigger) { - ret = platform->driver->compr_ops->trigger(cstream, cmd); - if (ret < 0) - goto out; - } - for_each_rtdcom(fe, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->trigger) continue; @@ -589,7 +497,6 @@ static int soc_compr_set_params(struct snd_compr_stream *cstream, struct snd_compr_params *params) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -597,11 +504,12 @@ static int soc_compr_set_params(struct snd_compr_stream *cstream,
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
- /* first we call set_params for the platform driver - * this should configure the soc side - * if the machine has compressed ops then we call that as well - * expectation is that platform and machine will configure everything - * for this compress path, like configuring pcm port for codec + /* + * First we call set_params for the CPU DAI, then the component + * driver this should configure the SoC side. If the machine has + * compressed ops then we call that as well. The expectation is + * that these callbacks will configure everything for this compress + * path, like configuring a PCM port for a CODEC. */ if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) { ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai); @@ -609,19 +517,9 @@ static int soc_compr_set_params(struct snd_compr_stream *cstream, goto err; }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->set_params) { - ret = platform->driver->compr_ops->set_params(cstream, params); - if (ret < 0) - goto err; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->set_params) continue; @@ -665,7 +563,6 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream, struct snd_soc_pcm_runtime *fe = cstream->private_data; struct snd_pcm_substream *fe_substream = fe->pcm->streams[cstream->direction].substream; - struct snd_soc_platform *platform = fe->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; @@ -684,19 +581,9 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream, goto out; }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->set_params) { - ret = platform->driver->compr_ops->set_params(cstream, params); - if (ret < 0) - goto out; - } - for_each_rtdcom(fe, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->set_params) continue; @@ -745,7 +632,6 @@ static int soc_compr_get_params(struct snd_compr_stream *cstream, struct snd_codec *params) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -759,19 +645,9 @@ static int soc_compr_get_params(struct snd_compr_stream *cstream, goto err; }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->get_params) { - ret = platform->driver->compr_ops->get_params(cstream, params); - if (ret < 0) - goto err; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->get_params) continue; @@ -790,26 +666,15 @@ static int soc_compr_get_caps(struct snd_compr_stream *cstream, struct snd_compr_caps *caps) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; int ret = 0, __ret;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->get_caps) { - ret = platform->driver->compr_ops->get_caps(cstream, caps); - if (ret < 0) - goto err; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->get_caps) continue; @@ -819,7 +684,6 @@ static int soc_compr_get_caps(struct snd_compr_stream *cstream, ret = __ret; }
-err: mutex_unlock(&rtd->pcm_mutex); return ret; } @@ -828,26 +692,15 @@ static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, struct snd_compr_codec_caps *codec) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; int ret = 0, __ret;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps) { - ret = platform->driver->compr_ops->get_codec_caps(cstream, codec); - if (ret < 0) - goto err; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->get_codec_caps) continue; @@ -857,7 +710,6 @@ static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, ret = __ret; }
-err: mutex_unlock(&rtd->pcm_mutex); return ret; } @@ -865,7 +717,6 @@ static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -879,19 +730,9 @@ static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) goto err; }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->ack) { - ret = platform->driver->compr_ops->ack(cstream, bytes); - if (ret < 0) - goto err; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->ack) continue; @@ -910,7 +751,6 @@ static int soc_compr_pointer(struct snd_compr_stream *cstream, struct snd_compr_tstamp *tstamp) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; int ret = 0, __ret; @@ -921,19 +761,9 @@ static int soc_compr_pointer(struct snd_compr_stream *cstream, if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer) cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai);
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->pointer) { - ret = platform->driver->compr_ops->pointer(cstream, tstamp); - if (ret < 0) - goto err; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->pointer) continue; @@ -943,7 +773,6 @@ static int soc_compr_pointer(struct snd_compr_stream *cstream, ret = __ret; }
-err: mutex_unlock(&rtd->pcm_mutex); return ret; } @@ -952,26 +781,15 @@ static int soc_compr_copy(struct snd_compr_stream *cstream, char __user *buf, size_t count) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; int ret = 0;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->copy) { - ret = platform->driver->compr_ops->copy(cstream, buf, count); - if (ret < 0) - goto err; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->copy) continue; @@ -980,7 +798,6 @@ static int soc_compr_copy(struct snd_compr_stream *cstream, break; }
-err: mutex_unlock(&rtd->pcm_mutex); return ret; } @@ -989,7 +806,6 @@ static int soc_compr_set_metadata(struct snd_compr_stream *cstream, struct snd_compr_metadata *metadata) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -1001,19 +817,9 @@ static int soc_compr_set_metadata(struct snd_compr_stream *cstream, return ret; }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->set_metadata) { - ret = platform->driver->compr_ops->set_metadata(cstream, metadata); - if (ret < 0) - return ret; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->set_metadata) continue; @@ -1030,7 +836,6 @@ static int soc_compr_get_metadata(struct snd_compr_stream *cstream, struct snd_compr_metadata *metadata) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -1042,19 +847,9 @@ static int soc_compr_get_metadata(struct snd_compr_stream *cstream, return ret; }
- if (platform && platform->driver->compr_ops && platform->driver->compr_ops->get_metadata) { - ret = platform->driver->compr_ops->get_metadata(cstream, metadata); - if (ret < 0) - return ret; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->get_metadata) continue; @@ -1107,7 +902,6 @@ static struct snd_compr_ops soc_compr_dyn_ops = { */ int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) { - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *codec_dai = rtd->codec_dai; @@ -1188,18 +982,9 @@ int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops)); }
- - /* Add copy callback for not memory mapped DSPs */ - if (platform && platform->driver->compr_ops && platform->driver->compr_ops->copy) - compr->ops->copy = soc_compr_copy; - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->compr_ops || !component->driver->compr_ops->copy) continue; diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index bf7ca32ab31f..052089f16ea0 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -56,7 +56,6 @@ EXPORT_SYMBOL_GPL(snd_soc_debugfs_root); #endif
static DEFINE_MUTEX(client_mutex); -static LIST_HEAD(platform_list); static LIST_HEAD(codec_list); static LIST_HEAD(component_list);
@@ -381,21 +380,6 @@ static int dai_list_show(struct seq_file *m, void *v) } DEFINE_SHOW_ATTRIBUTE(dai_list);
-static int platform_list_show(struct seq_file *m, void *v) -{ - struct snd_soc_platform *platform; - - mutex_lock(&client_mutex); - - list_for_each_entry(platform, &platform_list, list) - seq_printf(m, "%s\n", platform->component.name); - - mutex_unlock(&client_mutex); - - return 0; -} -DEFINE_SHOW_ATTRIBUTE(platform_list); - static void soc_init_card_debugfs(struct snd_soc_card *card) { if (!snd_soc_debugfs_root) @@ -438,10 +422,6 @@ static void snd_soc_debugfs_init(void) if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL, &dai_list_fops)) pr_warn("ASoC: Failed to create DAI list debugfs file\n"); - - if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL, - &platform_list_fops)) - pr_warn("ASoC: Failed to create platform list debugfs file\n"); }
static void snd_soc_debugfs_exit(void) @@ -1045,7 +1025,6 @@ static int soc_bind_dai_link(struct snd_soc_card *card, struct snd_soc_dai_link_component cpu_dai_component; struct snd_soc_component *component; struct snd_soc_dai **codec_dais; - struct snd_soc_platform *platform; struct device_node *platform_of_node; const char *platform_name; int i; @@ -1113,23 +1092,6 @@ static int soc_bind_dai_link(struct snd_soc_card *card, snd_soc_rtdcom_add(rtd, component); }
- /* find one from the set of registered platforms */ - list_for_each_entry(platform, &platform_list, list) { - platform_of_node = platform->dev->of_node; - if (!platform_of_node && platform->dev->parent->of_node) - platform_of_node = platform->dev->parent->of_node; - - if (dai_link->platform_of_node) { - if (platform_of_node != dai_link->platform_of_node) - continue; - } else { - if (strcmp(platform->component.name, platform_name)) - continue; - } - - rtd->platform = platform; - } - soc_add_pcm_runtime(card, rtd); return 0;
@@ -2513,24 +2475,6 @@ int snd_soc_add_codec_controls(struct snd_soc_codec *codec, EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
/** - * snd_soc_add_platform_controls - add an array of controls to a platform. - * Convenience function to add a list of controls. - * - * @platform: platform to add controls to - * @controls: array of controls to add - * @num_controls: number of elements in the array - * - * Return 0 for success, else error. - */ -int snd_soc_add_platform_controls(struct snd_soc_platform *platform, - const struct snd_kcontrol_new *controls, unsigned int num_controls) -{ - return snd_soc_add_component_controls(&platform->component, controls, - num_controls); -} -EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls); - -/** * snd_soc_add_card_controls - add an array of controls to a SoC card. * Convenience function to add a list of controls. * @@ -3503,164 +3447,6 @@ struct snd_soc_component *snd_soc_lookup_component(struct device *dev, } EXPORT_SYMBOL_GPL(snd_soc_lookup_component);
-static int snd_soc_platform_drv_probe(struct snd_soc_component *component) -{ - struct snd_soc_platform *platform = snd_soc_component_to_platform(component); - - return platform->driver->probe(platform); -} - -static void snd_soc_platform_drv_remove(struct snd_soc_component *component) -{ - struct snd_soc_platform *platform = snd_soc_component_to_platform(component); - - platform->driver->remove(platform); -} - -static int snd_soc_platform_drv_pcm_new(struct snd_soc_component *component, - struct snd_soc_pcm_runtime *rtd) -{ - struct snd_soc_platform *platform = snd_soc_component_to_platform(component); - - if (platform->driver->pcm_new) - return platform->driver->pcm_new(rtd); - - return 0; -} - -static void snd_soc_platform_drv_pcm_free(struct snd_soc_component *component, - struct snd_pcm *pcm) -{ - struct snd_soc_platform *platform = snd_soc_component_to_platform(component); - - if (platform->driver->pcm_free) - platform->driver->pcm_free(pcm); -} - -/** - * snd_soc_add_platform - Add a platform to the ASoC core - * @dev: The parent device for the platform - * @platform: The platform to add - * @platform_drv: The driver for the platform - */ -int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform, - const struct snd_soc_platform_driver *platform_drv) -{ - int ret; - - ret = snd_soc_component_initialize(&platform->component, - &platform_drv->component_driver, dev); - if (ret) - return ret; - - platform->dev = dev; - platform->driver = platform_drv; - - if (platform_drv->probe) - platform->component.probe = snd_soc_platform_drv_probe; - if (platform_drv->remove) - platform->component.remove = snd_soc_platform_drv_remove; - if (platform_drv->pcm_new) - platform->component.pcm_new = snd_soc_platform_drv_pcm_new; - if (platform_drv->pcm_free) - platform->component.pcm_free = snd_soc_platform_drv_pcm_free; - -#ifdef CONFIG_DEBUG_FS - platform->component.debugfs_prefix = "platform"; -#endif - - mutex_lock(&client_mutex); - snd_soc_component_add_unlocked(&platform->component); - list_add(&platform->list, &platform_list); - mutex_unlock(&client_mutex); - - dev_dbg(dev, "ASoC: Registered platform '%s'\n", - platform->component.name); - - return 0; -} -EXPORT_SYMBOL_GPL(snd_soc_add_platform); - -/** - * snd_soc_register_platform - Register a platform with the ASoC core - * - * @dev: The device for the platform - * @platform_drv: The driver for the platform - */ -int snd_soc_register_platform(struct device *dev, - const struct snd_soc_platform_driver *platform_drv) -{ - struct snd_soc_platform *platform; - int ret; - - dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev)); - - platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL); - if (platform == NULL) - return -ENOMEM; - - ret = snd_soc_add_platform(dev, platform, platform_drv); - if (ret) - kfree(platform); - - return ret; -} -EXPORT_SYMBOL_GPL(snd_soc_register_platform); - -/** - * snd_soc_remove_platform - Remove a platform from the ASoC core - * @platform: the platform to remove - */ -void snd_soc_remove_platform(struct snd_soc_platform *platform) -{ - - mutex_lock(&client_mutex); - list_del(&platform->list); - snd_soc_component_del_unlocked(&platform->component); - mutex_unlock(&client_mutex); - - dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n", - platform->component.name); - - snd_soc_component_cleanup(&platform->component); -} -EXPORT_SYMBOL_GPL(snd_soc_remove_platform); - -struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev) -{ - struct snd_soc_platform *platform; - - mutex_lock(&client_mutex); - list_for_each_entry(platform, &platform_list, list) { - if (dev == platform->dev) { - mutex_unlock(&client_mutex); - return platform; - } - } - mutex_unlock(&client_mutex); - - return NULL; -} -EXPORT_SYMBOL_GPL(snd_soc_lookup_platform); - -/** - * snd_soc_unregister_platform - Unregister a platform from the ASoC core - * - * @dev: platform to unregister - */ -void snd_soc_unregister_platform(struct device *dev) -{ - struct snd_soc_platform *platform; - - platform = snd_soc_lookup_platform(dev); - if (!platform) - return; - - snd_soc_remove_platform(platform); - kfree(platform); -} -EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); - static int snd_soc_codec_drv_probe(struct snd_soc_component *component) { struct snd_soc_codec *codec = snd_soc_component_to_codec(component); diff --git a/sound/soc/soc-devres.c b/sound/soc/soc-devres.c index a57921eeee81..7ac745df1412 100644 --- a/sound/soc/soc-devres.c +++ b/sound/soc/soc-devres.c @@ -52,41 +52,6 @@ int devm_snd_soc_register_component(struct device *dev, } EXPORT_SYMBOL_GPL(devm_snd_soc_register_component);
-static void devm_platform_release(struct device *dev, void *res) -{ - snd_soc_unregister_platform(*(struct device **)res); -} - -/** - * devm_snd_soc_register_platform - resource managed platform registration - * @dev: Device used to manage platform - * @platform_drv: platform to register - * - * Register a platform driver with automatic unregistration when the device is - * unregistered. - */ -int devm_snd_soc_register_platform(struct device *dev, - const struct snd_soc_platform_driver *platform_drv) -{ - struct device **ptr; - int ret; - - ptr = devres_alloc(devm_platform_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return -ENOMEM; - - ret = snd_soc_register_platform(dev, platform_drv); - if (ret == 0) { - *ptr = dev; - devres_add(dev, ptr); - } else { - devres_free(ptr); - } - - return ret; -} -EXPORT_SYMBOL_GPL(devm_snd_soc_register_platform); - static void devm_card_release(struct device *dev, void *res) { snd_soc_unregister_card(*(struct snd_soc_card **)res); diff --git a/sound/soc/soc-io.c b/sound/soc/soc-io.c index d36a192fbece..c92a04bac3c5 100644 --- a/sound/soc/soc-io.c +++ b/sound/soc/soc-io.c @@ -267,24 +267,3 @@ int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned int reg, return snd_soc_component_test_bits(&codec->component, reg, mask, value); } EXPORT_SYMBOL_GPL(snd_soc_test_bits); - -int snd_soc_platform_read(struct snd_soc_platform *platform, - unsigned int reg) -{ - unsigned int val; - int ret; - - ret = snd_soc_component_read(&platform->component, reg, &val); - if (ret < 0) - return -1; - - return val; -} -EXPORT_SYMBOL_GPL(snd_soc_platform_read); - -int snd_soc_platform_write(struct snd_soc_platform *platform, - unsigned int reg, unsigned int val) -{ - return snd_soc_component_write(&platform->component, reg, val); -} -EXPORT_SYMBOL_GPL(snd_soc_platform_write); diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 68d9dc930096..da5a2dcb6520 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -456,13 +456,12 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) /* * Called by ALSA when a PCM substream is opened, the runtime->hw record is * then initialized and any private data can be allocated. This also calls - * startup for the cpu DAI, platform, machine and codec DAI. + * startup for the cpu DAI, component, machine and codec DAI. */ static int soc_pcm_open(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -492,23 +491,10 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) } }
- if (platform && platform->driver->ops && platform->driver->ops->open) { - ret = platform->driver->ops->open(substream); - if (ret < 0) { - dev_err(platform->dev, "ASoC: can't open platform" - " %s: %d\n", platform->component.name, ret); - goto platform_err; - } - } - ret = 0; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->open) continue; @@ -634,10 +620,6 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->close) continue; @@ -645,10 +627,6 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) component->driver->ops->close(substream); }
- if (platform && platform->driver->ops && platform->driver->ops->close) - platform->driver->ops->close(substream); - -platform_err: if (cpu_dai->driver->ops->shutdown) cpu_dai->driver->ops->shutdown(substream, cpu_dai); out: @@ -701,13 +679,12 @@ static void close_delayed_work(struct work_struct *work)
/* * Called by ALSA when a PCM substream is closed. Private data can be - * freed here. The cpu DAI, codec DAI, machine and platform are also + * freed here. The cpu DAI, codec DAI, machine and components are also * shutdown. */ static int soc_pcm_close(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -742,16 +719,9 @@ static int soc_pcm_close(struct snd_pcm_substream *substream) if (rtd->dai_link->ops->shutdown) rtd->dai_link->ops->shutdown(substream);
- if (platform && platform->driver->ops && platform->driver->ops->close) - platform->driver->ops->close(substream); - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->close) continue; @@ -805,7 +775,6 @@ static int soc_pcm_close(struct snd_pcm_substream *substream) static int soc_pcm_prepare(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -823,22 +792,9 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) } }
- if (platform && platform->driver->ops && platform->driver->ops->prepare) { - ret = platform->driver->ops->prepare(substream); - if (ret < 0) { - dev_err(platform->dev, "ASoC: platform prepare error:" - " %d\n", ret); - goto out; - } - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->prepare) continue; @@ -932,7 +888,6 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -994,23 +949,10 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, if (ret < 0) goto interface_err;
- if (platform && platform->driver->ops && platform->driver->ops->hw_params) { - ret = platform->driver->ops->hw_params(substream, params); - if (ret < 0) { - dev_err(platform->dev, "ASoC: %s hw params failed: %d\n", - platform->component.name, ret); - goto platform_err; - } - } - ret = 0; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->hw_params) continue; @@ -1043,10 +985,6 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->hw_free) continue; @@ -1054,10 +992,6 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, component->driver->ops->hw_free(substream); }
- if (platform && platform->driver->ops && platform->driver->ops->hw_free) - platform->driver->ops->hw_free(substream); - -platform_err: if (cpu_dai->driver->ops->hw_free) cpu_dai->driver->ops->hw_free(substream, cpu_dai);
@@ -1085,7 +1019,6 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, static int soc_pcm_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -1123,18 +1056,10 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream) if (rtd->dai_link->ops->hw_free) rtd->dai_link->ops->hw_free(substream);
- /* free any DMA resources */ - if (platform && platform->driver->ops && platform->driver->ops->hw_free) - platform->driver->ops->hw_free(substream); - /* free any component resources */ for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->hw_free) continue; @@ -1159,7 +1084,6 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream) static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -1176,19 +1100,9 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) } }
- if (platform && platform->driver->ops && platform->driver->ops->trigger) { - ret = platform->driver->ops->trigger(substream, cmd); - if (ret < 0) - return ret; - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->trigger) continue; @@ -1240,13 +1154,12 @@ static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, } /* * soc level wrapper for pointer callback - * If cpu_dai, codec_dai, platform driver has the delay callback, than + * If cpu_dai, codec_dai, component driver has the delay callback, then * the runtime->delay will be updated accordingly. */ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; @@ -1257,16 +1170,9 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) snd_pcm_sframes_t codec_delay = 0; int i;
- if (platform && platform->driver->ops && platform->driver->ops->pointer) - offset = platform->driver->ops->pointer(substream); - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->pointer) continue; @@ -2470,20 +2376,12 @@ static int soc_pcm_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom;
- if (platform && platform->driver->ops && platform->driver->ops->ioctl) - return platform->driver->ops->ioctl(substream, cmd, arg); - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
- /* ignore duplication for now */ - if (platform && (component == &platform->component)) - continue; - if (!component->driver->ops || !component->driver->ops->ioctl) continue; @@ -2987,7 +2885,6 @@ static int soc_rtdcom_mmap(struct snd_pcm_substream *substream, /* create a new pcm */ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) { - struct snd_soc_platform *platform = rtd->platform; struct snd_soc_dai *codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_component *component; @@ -3106,16 +3003,6 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) rtd->ops.mmap = soc_rtdcom_mmap; }
- /* overwrite */ - if (platform && platform->driver->ops) { - rtd->ops.ack = platform->driver->ops->ack; - rtd->ops.copy_user = platform->driver->ops->copy_user; - rtd->ops.copy_kernel = platform->driver->ops->copy_kernel; - rtd->ops.fill_silence = platform->driver->ops->fill_silence; - rtd->ops.page = platform->driver->ops->page; - rtd->ops.mmap = platform->driver->ops->mmap; - } - if (playback) snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops);
On Tue, Apr 24, 2018 at 04:39:02PM +0100, Charles Keepax wrote:
As all drivers have been moved over to the new generic component code remove the now unused platform specific code.
Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com
include/sound/soc.h | 103 +-------------------- sound/soc/soc-compress.c | 227 ++---------------------------------------------
For compress:
Acked-by: Vinod Koul vkoul@kernel.org
There are 2 loops calling open and 4 loops calling free for all the components on a DAI link. Factor out these loops into helper functions to make the code a little clearer.
Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com ---
I am looking at refactoring some of the other callbacks as well, but there is quite a lot to think about. So thought I would get these out for people to look at whilst I work out what makes sense for the rest.
Thanks, Charles
sound/soc/soc-compress.c | 141 +++++++++++++++++++++-------------------------- 1 file changed, 62 insertions(+), 79 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index abc00c6cc2d7..ba56f87f96d4 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -26,26 +26,14 @@ #include <sound/initval.h> #include <sound/soc-dpcm.h>
-static int soc_compr_open(struct snd_compr_stream *cstream) +static int soc_compr_components_open(struct snd_compr_stream *cstream, + struct snd_soc_component **last) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int ret;
- mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); - - if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { - ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); - if (ret < 0) { - dev_err(cpu_dai->dev, - "Compress ASoC: can't open interface %s: %d\n", - cpu_dai->name, ret); - goto out; - } - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
@@ -58,10 +46,61 @@ static int soc_compr_open(struct snd_compr_stream *cstream) dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", component->name, ret); - goto machine_err; + + *last = component; + return ret; + } + } + + *last = NULL; + return 0; +} + +static int soc_compr_components_free(struct snd_compr_stream *cstream, + struct snd_soc_component *last) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_component *component; + struct snd_soc_rtdcom_list *rtdcom; + + for_each_rtdcom(rtd, rtdcom) { + component = rtdcom->component; + + if (component == last) + break; + + if (!component->driver->compr_ops || + !component->driver->compr_ops->free) + continue; + + component->driver->compr_ops->free(cstream); + } + + return 0; +} + +static int soc_compr_open(struct snd_compr_stream *cstream) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_component *component; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + int ret; + + mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); + + if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { + ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); + if (ret < 0) { + dev_err(cpu_dai->dev, + "Compress ASoC: can't open interface %s: %d\n", + cpu_dai->name, ret); + goto out; } } - component = NULL; + + ret = soc_compr_components_open(cstream, &component); + if (ret < 0) + goto machine_err;
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { ret = rtd->dai_link->compr_ops->startup(cstream); @@ -80,18 +119,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream) return 0;
machine_err: - for_each_rtdcom(rtd, rtdcom) { - struct snd_soc_component *err_comp = rtdcom->component; - - if (err_comp == component) - break; - - if (!err_comp->driver->compr_ops || - !err_comp->driver->compr_ops->free) - continue; - - err_comp->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, component);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -106,7 +134,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_pcm_substream *fe_substream = fe->pcm->streams[cstream->direction].substream; struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; @@ -130,22 +157,9 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) } }
- for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->open) - continue; - - ret = component->driver->compr_ops->open(cstream); - if (ret < 0) { - dev_err(component->dev, - "Compress ASoC: can't open platform %s: %d\n", - component->name, ret); - goto machine_err; - } - } - component = NULL; + ret = soc_compr_components_open(cstream, &component); + if (ret < 0) + goto machine_err;
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { ret = fe->dai_link->compr_ops->startup(cstream); @@ -199,18 +213,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream); machine_err: - for_each_rtdcom(fe, rtdcom) { - struct snd_soc_component *err_comp = rtdcom->component; - - if (err_comp == component) - break; - - if (!err_comp->driver->compr_ops || - !err_comp->driver->compr_ops->free) - continue; - - err_comp->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, component);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -252,8 +255,6 @@ static void close_delayed_work(struct work_struct *work) static int soc_compr_free(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai = rtd->codec_dai; int stream; @@ -278,15 +279,7 @@ static int soc_compr_free(struct snd_compr_stream *cstream) if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) rtd->dai_link->compr_ops->shutdown(cstream);
- for_each_rtdcom(rtd, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->free) - continue; - - component->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, NULL);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -316,8 +309,6 @@ static int soc_compr_free(struct snd_compr_stream *cstream) static int soc_compr_free_fe(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *fe = cstream->private_data; - struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; struct snd_soc_dpcm *dpcm; int stream, ret; @@ -355,15 +346,7 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream);
- for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->free) - continue; - - component->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, NULL);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
On Tue, Apr 24, 2018 at 04:39:03PM +0100, Charles Keepax wrote:
There are 2 loops calling open and 4 loops calling free for all the components on a DAI link. Factor out these loops into helper functions to make the code a little clearer.
Acked-by: Vinod Koul vkoul@kernel.org
The patch
ASoC: compress: Add helper functions for component open/free
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 1e57b82891ade3fd71c030077901808a6e5376ab Mon Sep 17 00:00:00 2001
From: Charles Keepax ckeepax@opensource.cirrus.com Date: Tue, 24 Apr 2018 16:39:03 +0100 Subject: [PATCH] ASoC: compress: Add helper functions for component open/free
There are 2 loops calling open and 4 loops calling free for all the components on a DAI link. Factor out these loops into helper functions to make the code a little clearer.
Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com Acked-by: Vinod Koul vkoul@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-compress.c | 141 +++++++++++++++++---------------------- 1 file changed, 62 insertions(+), 79 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index abc00c6cc2d7..ba56f87f96d4 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -26,26 +26,14 @@ #include <sound/initval.h> #include <sound/soc-dpcm.h>
-static int soc_compr_open(struct snd_compr_stream *cstream) +static int soc_compr_components_open(struct snd_compr_stream *cstream, + struct snd_soc_component **last) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int ret;
- mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); - - if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { - ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); - if (ret < 0) { - dev_err(cpu_dai->dev, - "Compress ASoC: can't open interface %s: %d\n", - cpu_dai->name, ret); - goto out; - } - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
@@ -58,10 +46,61 @@ static int soc_compr_open(struct snd_compr_stream *cstream) dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", component->name, ret); - goto machine_err; + + *last = component; + return ret; + } + } + + *last = NULL; + return 0; +} + +static int soc_compr_components_free(struct snd_compr_stream *cstream, + struct snd_soc_component *last) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_component *component; + struct snd_soc_rtdcom_list *rtdcom; + + for_each_rtdcom(rtd, rtdcom) { + component = rtdcom->component; + + if (component == last) + break; + + if (!component->driver->compr_ops || + !component->driver->compr_ops->free) + continue; + + component->driver->compr_ops->free(cstream); + } + + return 0; +} + +static int soc_compr_open(struct snd_compr_stream *cstream) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_component *component; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + int ret; + + mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); + + if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { + ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); + if (ret < 0) { + dev_err(cpu_dai->dev, + "Compress ASoC: can't open interface %s: %d\n", + cpu_dai->name, ret); + goto out; } } - component = NULL; + + ret = soc_compr_components_open(cstream, &component); + if (ret < 0) + goto machine_err;
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { ret = rtd->dai_link->compr_ops->startup(cstream); @@ -80,18 +119,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream) return 0;
machine_err: - for_each_rtdcom(rtd, rtdcom) { - struct snd_soc_component *err_comp = rtdcom->component; - - if (err_comp == component) - break; - - if (!err_comp->driver->compr_ops || - !err_comp->driver->compr_ops->free) - continue; - - err_comp->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, component);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -106,7 +134,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_pcm_substream *fe_substream = fe->pcm->streams[cstream->direction].substream; struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; @@ -130,22 +157,9 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) } }
- for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->open) - continue; - - ret = component->driver->compr_ops->open(cstream); - if (ret < 0) { - dev_err(component->dev, - "Compress ASoC: can't open platform %s: %d\n", - component->name, ret); - goto machine_err; - } - } - component = NULL; + ret = soc_compr_components_open(cstream, &component); + if (ret < 0) + goto machine_err;
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { ret = fe->dai_link->compr_ops->startup(cstream); @@ -199,18 +213,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream); machine_err: - for_each_rtdcom(fe, rtdcom) { - struct snd_soc_component *err_comp = rtdcom->component; - - if (err_comp == component) - break; - - if (!err_comp->driver->compr_ops || - !err_comp->driver->compr_ops->free) - continue; - - err_comp->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, component);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -252,8 +255,6 @@ static void close_delayed_work(struct work_struct *work) static int soc_compr_free(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai = rtd->codec_dai; int stream; @@ -278,15 +279,7 @@ static int soc_compr_free(struct snd_compr_stream *cstream) if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) rtd->dai_link->compr_ops->shutdown(cstream);
- for_each_rtdcom(rtd, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->free) - continue; - - component->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, NULL);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -316,8 +309,6 @@ static int soc_compr_free(struct snd_compr_stream *cstream) static int soc_compr_free_fe(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *fe = cstream->private_data; - struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; struct snd_soc_dpcm *dpcm; int stream, ret; @@ -355,15 +346,7 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream);
- for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->free) - continue; - - component->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, NULL);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
The patch
ASoC: compress: Add helper functions for component open/free
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 1e57b82891ade3fd71c030077901808a6e5376ab Mon Sep 17 00:00:00 2001
From: Charles Keepax ckeepax@opensource.cirrus.com Date: Tue, 24 Apr 2018 16:39:03 +0100 Subject: [PATCH] ASoC: compress: Add helper functions for component open/free
There are 2 loops calling open and 4 loops calling free for all the components on a DAI link. Factor out these loops into helper functions to make the code a little clearer.
Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com Acked-by: Vinod Koul vkoul@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-compress.c | 141 +++++++++++++++++---------------------- 1 file changed, 62 insertions(+), 79 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index abc00c6cc2d7..ba56f87f96d4 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -26,26 +26,14 @@ #include <sound/initval.h> #include <sound/soc-dpcm.h>
-static int soc_compr_open(struct snd_compr_stream *cstream) +static int soc_compr_components_open(struct snd_compr_stream *cstream, + struct snd_soc_component **last) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int ret;
- mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); - - if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { - ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); - if (ret < 0) { - dev_err(cpu_dai->dev, - "Compress ASoC: can't open interface %s: %d\n", - cpu_dai->name, ret); - goto out; - } - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
@@ -58,10 +46,61 @@ static int soc_compr_open(struct snd_compr_stream *cstream) dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", component->name, ret); - goto machine_err; + + *last = component; + return ret; + } + } + + *last = NULL; + return 0; +} + +static int soc_compr_components_free(struct snd_compr_stream *cstream, + struct snd_soc_component *last) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_component *component; + struct snd_soc_rtdcom_list *rtdcom; + + for_each_rtdcom(rtd, rtdcom) { + component = rtdcom->component; + + if (component == last) + break; + + if (!component->driver->compr_ops || + !component->driver->compr_ops->free) + continue; + + component->driver->compr_ops->free(cstream); + } + + return 0; +} + +static int soc_compr_open(struct snd_compr_stream *cstream) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_component *component; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + int ret; + + mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); + + if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { + ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); + if (ret < 0) { + dev_err(cpu_dai->dev, + "Compress ASoC: can't open interface %s: %d\n", + cpu_dai->name, ret); + goto out; } } - component = NULL; + + ret = soc_compr_components_open(cstream, &component); + if (ret < 0) + goto machine_err;
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { ret = rtd->dai_link->compr_ops->startup(cstream); @@ -80,18 +119,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream) return 0;
machine_err: - for_each_rtdcom(rtd, rtdcom) { - struct snd_soc_component *err_comp = rtdcom->component; - - if (err_comp == component) - break; - - if (!err_comp->driver->compr_ops || - !err_comp->driver->compr_ops->free) - continue; - - err_comp->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, component);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -106,7 +134,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_pcm_substream *fe_substream = fe->pcm->streams[cstream->direction].substream; struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; @@ -130,22 +157,9 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) } }
- for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->open) - continue; - - ret = component->driver->compr_ops->open(cstream); - if (ret < 0) { - dev_err(component->dev, - "Compress ASoC: can't open platform %s: %d\n", - component->name, ret); - goto machine_err; - } - } - component = NULL; + ret = soc_compr_components_open(cstream, &component); + if (ret < 0) + goto machine_err;
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { ret = fe->dai_link->compr_ops->startup(cstream); @@ -199,18 +213,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream); machine_err: - for_each_rtdcom(fe, rtdcom) { - struct snd_soc_component *err_comp = rtdcom->component; - - if (err_comp == component) - break; - - if (!err_comp->driver->compr_ops || - !err_comp->driver->compr_ops->free) - continue; - - err_comp->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, component);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -252,8 +255,6 @@ static void close_delayed_work(struct work_struct *work) static int soc_compr_free(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai = rtd->codec_dai; int stream; @@ -278,15 +279,7 @@ static int soc_compr_free(struct snd_compr_stream *cstream) if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) rtd->dai_link->compr_ops->shutdown(cstream);
- for_each_rtdcom(rtd, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->free) - continue; - - component->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, NULL);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -316,8 +309,6 @@ static int soc_compr_free(struct snd_compr_stream *cstream) static int soc_compr_free_fe(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *fe = cstream->private_data; - struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; struct snd_soc_dpcm *dpcm; int stream, ret; @@ -355,15 +346,7 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream);
- for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->free) - continue; - - component->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, NULL);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
The patch
ASoC: compress: Add helper functions for component open/free
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 1e57b82891ade3fd71c030077901808a6e5376ab Mon Sep 17 00:00:00 2001
From: Charles Keepax ckeepax@opensource.cirrus.com Date: Tue, 24 Apr 2018 16:39:03 +0100 Subject: [PATCH] ASoC: compress: Add helper functions for component open/free
There are 2 loops calling open and 4 loops calling free for all the components on a DAI link. Factor out these loops into helper functions to make the code a little clearer.
Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com Acked-by: Vinod Koul vkoul@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-compress.c | 141 +++++++++++++++++---------------------- 1 file changed, 62 insertions(+), 79 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index abc00c6cc2d7..ba56f87f96d4 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -26,26 +26,14 @@ #include <sound/initval.h> #include <sound/soc-dpcm.h>
-static int soc_compr_open(struct snd_compr_stream *cstream) +static int soc_compr_components_open(struct snd_compr_stream *cstream, + struct snd_soc_component **last) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int ret;
- mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); - - if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { - ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); - if (ret < 0) { - dev_err(cpu_dai->dev, - "Compress ASoC: can't open interface %s: %d\n", - cpu_dai->name, ret); - goto out; - } - } - for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component;
@@ -58,10 +46,61 @@ static int soc_compr_open(struct snd_compr_stream *cstream) dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", component->name, ret); - goto machine_err; + + *last = component; + return ret; + } + } + + *last = NULL; + return 0; +} + +static int soc_compr_components_free(struct snd_compr_stream *cstream, + struct snd_soc_component *last) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_component *component; + struct snd_soc_rtdcom_list *rtdcom; + + for_each_rtdcom(rtd, rtdcom) { + component = rtdcom->component; + + if (component == last) + break; + + if (!component->driver->compr_ops || + !component->driver->compr_ops->free) + continue; + + component->driver->compr_ops->free(cstream); + } + + return 0; +} + +static int soc_compr_open(struct snd_compr_stream *cstream) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_component *component; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + int ret; + + mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); + + if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) { + ret = cpu_dai->driver->cops->startup(cstream, cpu_dai); + if (ret < 0) { + dev_err(cpu_dai->dev, + "Compress ASoC: can't open interface %s: %d\n", + cpu_dai->name, ret); + goto out; } } - component = NULL; + + ret = soc_compr_components_open(cstream, &component); + if (ret < 0) + goto machine_err;
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { ret = rtd->dai_link->compr_ops->startup(cstream); @@ -80,18 +119,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream) return 0;
machine_err: - for_each_rtdcom(rtd, rtdcom) { - struct snd_soc_component *err_comp = rtdcom->component; - - if (err_comp == component) - break; - - if (!err_comp->driver->compr_ops || - !err_comp->driver->compr_ops->free) - continue; - - err_comp->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, component);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -106,7 +134,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_pcm_substream *fe_substream = fe->pcm->streams[cstream->direction].substream; struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; @@ -130,22 +157,9 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) } }
- for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->open) - continue; - - ret = component->driver->compr_ops->open(cstream); - if (ret < 0) { - dev_err(component->dev, - "Compress ASoC: can't open platform %s: %d\n", - component->name, ret); - goto machine_err; - } - } - component = NULL; + ret = soc_compr_components_open(cstream, &component); + if (ret < 0) + goto machine_err;
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { ret = fe->dai_link->compr_ops->startup(cstream); @@ -199,18 +213,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream); machine_err: - for_each_rtdcom(fe, rtdcom) { - struct snd_soc_component *err_comp = rtdcom->component; - - if (err_comp == component) - break; - - if (!err_comp->driver->compr_ops || - !err_comp->driver->compr_ops->free) - continue; - - err_comp->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, component);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -252,8 +255,6 @@ static void close_delayed_work(struct work_struct *work) static int soc_compr_free(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *rtd = cstream->private_data; - struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai = rtd->codec_dai; int stream; @@ -278,15 +279,7 @@ static int soc_compr_free(struct snd_compr_stream *cstream) if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) rtd->dai_link->compr_ops->shutdown(cstream);
- for_each_rtdcom(rtd, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->free) - continue; - - component->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, NULL);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai); @@ -316,8 +309,6 @@ static int soc_compr_free(struct snd_compr_stream *cstream) static int soc_compr_free_fe(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *fe = cstream->private_data; - struct snd_soc_component *component; - struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = fe->cpu_dai; struct snd_soc_dpcm *dpcm; int stream, ret; @@ -355,15 +346,7 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream) if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) fe->dai_link->compr_ops->shutdown(cstream);
- for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; - - if (!component->driver->compr_ops || - !component->driver->compr_ops->free) - continue; - - component->driver->compr_ops->free(cstream); - } + soc_compr_components_free(cstream, NULL);
if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown) cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
On Tue, Apr 24, 2018 at 04:39:01PM +0100, Charles Keepax wrote:
The core should only call free on a component if said component has already had open called on it. This is not presently the case and most compressed drivers in the kernel assume it will be. This causes null pointer dereferences in the drivers as they attempt clean up for stuff that was never put in place.
This is fixed by aborting calling open callbacks once a failure is encountered and then during clean up only iterating through the component list to that point.
Acked-by: Vinod Koul vkoul@kernel.org
The patch
ASoC: compress: Only call free for components which have been opened
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 572e6c8dd174bc6fc7ba5d9b6935e9ec8d2660f5 Mon Sep 17 00:00:00 2001
From: Charles Keepax ckeepax@opensource.cirrus.com Date: Tue, 24 Apr 2018 16:39:01 +0100 Subject: [PATCH] ASoC: compress: Only call free for components which have been opened
The core should only call free on a component if said component has already had open called on it. This is not presently the case and most compressed drivers in the kernel assume it will be. This causes null pointer dereferences in the drivers as they attempt clean up for stuff that was never put in place.
This is fixed by aborting calling open callbacks once a failure is encountered and then during clean up only iterating through the component list to that point.
This is a fairly quick fix to the issue, to allow backporting. There is more refactoring to follow to tidy the code up a little.
Fixes: 9e7e3738ab0e ("ASoC: snd_soc_component_driver has snd_compr_ops") Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com Acked-by: Vinod Koul vkoul@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-compress.c | 52 +++++++++++++++++++++------------------- 1 file changed, 28 insertions(+), 24 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index 82402688bd8e..948505f74229 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -33,7 +33,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream) struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - int ret = 0, __ret; + int ret;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
@@ -68,16 +68,15 @@ static int soc_compr_open(struct snd_compr_stream *cstream) !component->driver->compr_ops->open) continue;
- __ret = component->driver->compr_ops->open(cstream); - if (__ret < 0) { + ret = component->driver->compr_ops->open(cstream); + if (ret < 0) { dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", - component->name, __ret); - ret = __ret; + component->name, ret); + goto machine_err; } } - if (ret < 0) - goto machine_err; + component = NULL;
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { ret = rtd->dai_link->compr_ops->startup(cstream); @@ -97,17 +96,20 @@ static int soc_compr_open(struct snd_compr_stream *cstream)
machine_err: for_each_rtdcom(rtd, rtdcom) { - component = rtdcom->component; + struct snd_soc_component *err_comp = rtdcom->component; + + if (err_comp == component) + break;
/* ignore duplication for now */ - if (platform && (component == &platform->component)) + if (platform && (err_comp == &platform->component)) continue;
- if (!component->driver->compr_ops || - !component->driver->compr_ops->free) + if (!err_comp->driver->compr_ops || + !err_comp->driver->compr_ops->free) continue;
- component->driver->compr_ops->free(cstream); + err_comp->driver->compr_ops->free(cstream); }
if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free) @@ -132,7 +134,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; int stream; - int ret = 0, __ret; + int ret;
if (cstream->direction == SND_COMPRESS_PLAYBACK) stream = SNDRV_PCM_STREAM_PLAYBACK; @@ -172,16 +174,15 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) !component->driver->compr_ops->open) continue;
- __ret = component->driver->compr_ops->open(cstream); - if (__ret < 0) { + ret = component->driver->compr_ops->open(cstream); + if (ret < 0) { dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", - component->name, __ret); - ret = __ret; + component->name, ret); + goto machine_err; } } - if (ret < 0) - goto machine_err; + component = NULL;
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { ret = fe->dai_link->compr_ops->startup(cstream); @@ -236,17 +237,20 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) fe->dai_link->compr_ops->shutdown(cstream); machine_err: for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; + struct snd_soc_component *err_comp = rtdcom->component; + + if (err_comp == component) + break;
/* ignore duplication for now */ - if (platform && (component == &platform->component)) + if (platform && (err_comp == &platform->component)) continue;
- if (!component->driver->compr_ops || - !component->driver->compr_ops->free) + if (!err_comp->driver->compr_ops || + !err_comp->driver->compr_ops->free) continue;
- component->driver->compr_ops->free(cstream); + err_comp->driver->compr_ops->free(cstream); }
if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free)
The patch
ASoC: compress: Only call free for components which have been opened
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 572e6c8dd174bc6fc7ba5d9b6935e9ec8d2660f5 Mon Sep 17 00:00:00 2001
From: Charles Keepax ckeepax@opensource.cirrus.com Date: Tue, 24 Apr 2018 16:39:01 +0100 Subject: [PATCH] ASoC: compress: Only call free for components which have been opened
The core should only call free on a component if said component has already had open called on it. This is not presently the case and most compressed drivers in the kernel assume it will be. This causes null pointer dereferences in the drivers as they attempt clean up for stuff that was never put in place.
This is fixed by aborting calling open callbacks once a failure is encountered and then during clean up only iterating through the component list to that point.
This is a fairly quick fix to the issue, to allow backporting. There is more refactoring to follow to tidy the code up a little.
Fixes: 9e7e3738ab0e ("ASoC: snd_soc_component_driver has snd_compr_ops") Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com Acked-by: Vinod Koul vkoul@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-compress.c | 52 +++++++++++++++++++++------------------- 1 file changed, 28 insertions(+), 24 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index 82402688bd8e..948505f74229 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -33,7 +33,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream) struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - int ret = 0, __ret; + int ret;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
@@ -68,16 +68,15 @@ static int soc_compr_open(struct snd_compr_stream *cstream) !component->driver->compr_ops->open) continue;
- __ret = component->driver->compr_ops->open(cstream); - if (__ret < 0) { + ret = component->driver->compr_ops->open(cstream); + if (ret < 0) { dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", - component->name, __ret); - ret = __ret; + component->name, ret); + goto machine_err; } } - if (ret < 0) - goto machine_err; + component = NULL;
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { ret = rtd->dai_link->compr_ops->startup(cstream); @@ -97,17 +96,20 @@ static int soc_compr_open(struct snd_compr_stream *cstream)
machine_err: for_each_rtdcom(rtd, rtdcom) { - component = rtdcom->component; + struct snd_soc_component *err_comp = rtdcom->component; + + if (err_comp == component) + break;
/* ignore duplication for now */ - if (platform && (component == &platform->component)) + if (platform && (err_comp == &platform->component)) continue;
- if (!component->driver->compr_ops || - !component->driver->compr_ops->free) + if (!err_comp->driver->compr_ops || + !err_comp->driver->compr_ops->free) continue;
- component->driver->compr_ops->free(cstream); + err_comp->driver->compr_ops->free(cstream); }
if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free) @@ -132,7 +134,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; int stream; - int ret = 0, __ret; + int ret;
if (cstream->direction == SND_COMPRESS_PLAYBACK) stream = SNDRV_PCM_STREAM_PLAYBACK; @@ -172,16 +174,15 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) !component->driver->compr_ops->open) continue;
- __ret = component->driver->compr_ops->open(cstream); - if (__ret < 0) { + ret = component->driver->compr_ops->open(cstream); + if (ret < 0) { dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", - component->name, __ret); - ret = __ret; + component->name, ret); + goto machine_err; } } - if (ret < 0) - goto machine_err; + component = NULL;
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { ret = fe->dai_link->compr_ops->startup(cstream); @@ -236,17 +237,20 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) fe->dai_link->compr_ops->shutdown(cstream); machine_err: for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; + struct snd_soc_component *err_comp = rtdcom->component; + + if (err_comp == component) + break;
/* ignore duplication for now */ - if (platform && (component == &platform->component)) + if (platform && (err_comp == &platform->component)) continue;
- if (!component->driver->compr_ops || - !component->driver->compr_ops->free) + if (!err_comp->driver->compr_ops || + !err_comp->driver->compr_ops->free) continue;
- component->driver->compr_ops->free(cstream); + err_comp->driver->compr_ops->free(cstream); }
if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free)
The patch
ASoC: compress: Only call free for components which have been opened
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 572e6c8dd174bc6fc7ba5d9b6935e9ec8d2660f5 Mon Sep 17 00:00:00 2001
From: Charles Keepax ckeepax@opensource.cirrus.com Date: Tue, 24 Apr 2018 16:39:01 +0100 Subject: [PATCH] ASoC: compress: Only call free for components which have been opened
The core should only call free on a component if said component has already had open called on it. This is not presently the case and most compressed drivers in the kernel assume it will be. This causes null pointer dereferences in the drivers as they attempt clean up for stuff that was never put in place.
This is fixed by aborting calling open callbacks once a failure is encountered and then during clean up only iterating through the component list to that point.
This is a fairly quick fix to the issue, to allow backporting. There is more refactoring to follow to tidy the code up a little.
Fixes: 9e7e3738ab0e ("ASoC: snd_soc_component_driver has snd_compr_ops") Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com Acked-by: Vinod Koul vkoul@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/soc-compress.c | 52 +++++++++++++++++++++------------------- 1 file changed, 28 insertions(+), 24 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index 82402688bd8e..948505f74229 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -33,7 +33,7 @@ static int soc_compr_open(struct snd_compr_stream *cstream) struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - int ret = 0, __ret; + int ret;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
@@ -68,16 +68,15 @@ static int soc_compr_open(struct snd_compr_stream *cstream) !component->driver->compr_ops->open) continue;
- __ret = component->driver->compr_ops->open(cstream); - if (__ret < 0) { + ret = component->driver->compr_ops->open(cstream); + if (ret < 0) { dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", - component->name, __ret); - ret = __ret; + component->name, ret); + goto machine_err; } } - if (ret < 0) - goto machine_err; + component = NULL;
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { ret = rtd->dai_link->compr_ops->startup(cstream); @@ -97,17 +96,20 @@ static int soc_compr_open(struct snd_compr_stream *cstream)
machine_err: for_each_rtdcom(rtd, rtdcom) { - component = rtdcom->component; + struct snd_soc_component *err_comp = rtdcom->component; + + if (err_comp == component) + break;
/* ignore duplication for now */ - if (platform && (component == &platform->component)) + if (platform && (err_comp == &platform->component)) continue;
- if (!component->driver->compr_ops || - !component->driver->compr_ops->free) + if (!err_comp->driver->compr_ops || + !err_comp->driver->compr_ops->free) continue;
- component->driver->compr_ops->free(cstream); + err_comp->driver->compr_ops->free(cstream); }
if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free) @@ -132,7 +134,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; int stream; - int ret = 0, __ret; + int ret;
if (cstream->direction == SND_COMPRESS_PLAYBACK) stream = SNDRV_PCM_STREAM_PLAYBACK; @@ -172,16 +174,15 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) !component->driver->compr_ops->open) continue;
- __ret = component->driver->compr_ops->open(cstream); - if (__ret < 0) { + ret = component->driver->compr_ops->open(cstream); + if (ret < 0) { dev_err(component->dev, "Compress ASoC: can't open platform %s: %d\n", - component->name, __ret); - ret = __ret; + component->name, ret); + goto machine_err; } } - if (ret < 0) - goto machine_err; + component = NULL;
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { ret = fe->dai_link->compr_ops->startup(cstream); @@ -236,17 +237,20 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) fe->dai_link->compr_ops->shutdown(cstream); machine_err: for_each_rtdcom(fe, rtdcom) { - component = rtdcom->component; + struct snd_soc_component *err_comp = rtdcom->component; + + if (err_comp == component) + break;
/* ignore duplication for now */ - if (platform && (component == &platform->component)) + if (platform && (err_comp == &platform->component)) continue;
- if (!component->driver->compr_ops || - !component->driver->compr_ops->free) + if (!err_comp->driver->compr_ops || + !err_comp->driver->compr_ops->free) continue;
- component->driver->compr_ops->free(cstream); + err_comp->driver->compr_ops->free(cstream); }
if (platform && platform->driver->compr_ops && platform->driver->compr_ops->free)
participants (3)
-
Charles Keepax -
Mark Brown -
Vinod Koul