kernel.git/sound/core/pcm.c, branch linux-4.3.y

ALSA: pcm: Fix pcm_class sysfs output

2015-06-23T09:56:22Z

The pcm_class sysfs of each PCM substream gives only "none" since the recent code change to embed the struct device. Fix the code to point directly to the embedded device object properly. Fixes: ef46c7af93f9 ('ALSA: pcm: Embed struct device') Cc: # v4.0+ Signed-off-by: Takashi Iwai

ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS

2015-05-27T19:25:19Z

We may disable proc fs only for sound part, to reduce ALSA memory footprint. So add CONFIG_SND_PROC_FS and replace the old CONFIG_PROC_FSs in alsa code. With sound proc fs disabled, we can save about 9KB memory size on X86_64 platform. Signed-off-by: Jie Yang Reviewed-by: Mark Brown Signed-off-by: Takashi Iwai

ALSA: core: Drop superfluous error/debug messages after malloc failures

2015-03-10T14:42:14Z

The kernel memory allocators already report the errors when the requested allocation fails, thus we don't need to warn it again in each caller side. Signed-off-by: Takashi Iwai

ALSA: pcm: Don't ignore internal PCMs in snd_pcm_dev_disconnect()

2015-02-20T18:52:04Z

Some codes in snd_pcm_dev_disconnect() are still valid even for internal PCMs, but they are skipped because of the check of list_empty(&pcm->list) at the beginning. Remove this check and put pcm->internal checks appropriately for internal PCM object to process through this function. Acked-by: Liam Girdwood Signed-off-by: Takashi Iwai

ALSA: pcm: Don't notify internal PCMs

2015-02-20T18:51:50Z

Notifier shouldn't listen to the changes of internal PCMs. Acked-by: Liam Girdwood Signed-off-by: Takashi Iwai

ALSA: pcm: Don't add internal PCMs to PCM device list

2015-02-20T18:51:42Z

An internal PCM object shouldn't be added to the PCM device list, as it's never accessed directly from the user-space, and it has no proc or any similar accesses. Currently, it's excluded in snd_pcm_get() and snd_pcm_next(), but it's easier not to add such an object to the list. Actually, the whole snd_pcm_dev_register() can be skipped for an internal PCM. So this patch changes the code there, but also addresses the uninitialized list_head access. Acked-by: Liam Girdwood Signed-off-by: Takashi Iwai

ALSA: pcm: Minor refactoring in snd_pcm_attach_substream()

2015-02-20T18:51:04Z

No functional changes at all. Acked-by: Liam Girdwood Signed-off-by: Takashi Iwai

ALSA: Simplify snd_device_register() variants

2015-02-02T16:01:26Z

Now that all callers have been replaced with snd_device_register_for_dev(), let's drop the obsolete device registration code and concentrate only on the code handling struct device directly. That said, - remove the old snd_device_register(), - rename snd_device_register_for_dev() with snd_device_register(), - drop superfluous arguments from snd_device_register(), - change snd_unregister_device() to pass the device pointer directly Reviewed-by: Jaroslav Kysela Signed-off-by: Takashi Iwai

ALSA: pcm: Embed struct device

2015-02-02T13:42:42Z

Like previous patches, at this time we embed the struct device into PCM object. However, this needs a bit more caution: struct snd_pcm doesn't own one device but two, for both playback and capture! Thus not struct snd_pcm but struct snd_pcm_str object contains the device. Along with this change, pcm->dev field is dropped for avoiding confusion. It was meant to point to a non-standard parent. But, since now we can touch each struct device directly, we can manipulate the parent field easily there, too. Reviewed-by: Jaroslav Kysela Signed-off-by: Takashi Iwai

ALSA: control: Provide a helper to look for the preferred subdevice

2015-02-02T13:21:21Z

Instead of open-coding the search over the control file loop, provide a helper function for the preferred subdevice assigned to the current process. Reviewed-by: Jaroslav Kysela Signed-off-by: Takashi Iwai