Commit 60f96aae authored by Takashi Sakamoto's avatar Takashi Sakamoto Committed by Takashi Iwai
Browse files

ALSA: pcm: localize snd_pcm_hw_params_choose() 



As of v4.12, snd_pcm_hw_params_choose() is just called in a process
context of ioctl(2) with SNDRV_PCM_IOCTL_HW_PARAMS. The function locates
in a different file, which has no tracepoints.

This commit moves the function to a file with the tracepoints for later
commit.

Signed-off-by: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 4e4b7eaa

sound/core/pcm_lib.c

+0 −40
Original line number Diff line number Diff line
@@ -1700,46 +1700,6 @@ int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm, 


EXPORT_SYMBOL(snd_pcm_hw_param_last);



/**

 * snd_pcm_hw_param_choose - choose a configuration defined by @params

 * @pcm: PCM instance

 * @params: the hw_params instance

 *

 * Choose one configuration from configuration space defined by @params.

 * The configuration chosen is that obtained fixing in this order:

 * first access, first format, first subformat, min channels,

 * min rate, min period time, max buffer size, min tick time

 *

 * Return: Zero if successful, or a negative error code on failure.

 */

int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm,

			     struct snd_pcm_hw_params *params)

{

	static const int vars[] = {

		SNDRV_PCM_HW_PARAM_ACCESS,

		SNDRV_PCM_HW_PARAM_FORMAT,

		SNDRV_PCM_HW_PARAM_SUBFORMAT,

		SNDRV_PCM_HW_PARAM_CHANNELS,

		SNDRV_PCM_HW_PARAM_RATE,

		SNDRV_PCM_HW_PARAM_PERIOD_TIME,

		SNDRV_PCM_HW_PARAM_BUFFER_SIZE,

		SNDRV_PCM_HW_PARAM_TICK_TIME,

		-1

	};

	const int *v;

	int err;



	for (v = vars; *v != -1; v++) {

		if (*v != SNDRV_PCM_HW_PARAM_BUFFER_SIZE)

			err = snd_pcm_hw_param_first(pcm, params, *v, NULL);

		else

			err = snd_pcm_hw_param_last(pcm, params, *v, NULL);

		if (snd_BUG_ON(err < 0))

			return err;

	}

	return 0;

}



static int snd_pcm_lib_ioctl_reset(struct snd_pcm_substream *substream,

				   void *arg)

{

sound/core/pcm_local.h

+0 −3
Original line number Diff line number Diff line
@@ -24,9 +24,6 @@ void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, 
int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream);

int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream);



int snd_pcm_hw_params_choose(struct snd_pcm_substream *substream,

			     struct snd_pcm_hw_params *params);



int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime,

			       snd_pcm_hw_param_t var, u_int32_t mask);

sound/core/pcm_native.c

+40 −0
Original line number Diff line number Diff line
@@ -571,6 +571,46 @@ static inline void snd_pcm_timer_notify(struct snd_pcm_substream *substream, 
#endif

}



/**

 * snd_pcm_hw_param_choose - choose a configuration defined by @params

 * @pcm: PCM instance

 * @params: the hw_params instance

 *

 * Choose one configuration from configuration space defined by @params.

 * The configuration chosen is that obtained fixing in this order:

 * first access, first format, first subformat, min channels,

 * min rate, min period time, max buffer size, min tick time

 *

 * Return: Zero if successful, or a negative error code on failure.

 */

static int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm,

				    struct snd_pcm_hw_params *params)

{

	static const int vars[] = {

		SNDRV_PCM_HW_PARAM_ACCESS,

		SNDRV_PCM_HW_PARAM_FORMAT,

		SNDRV_PCM_HW_PARAM_SUBFORMAT,

		SNDRV_PCM_HW_PARAM_CHANNELS,

		SNDRV_PCM_HW_PARAM_RATE,

		SNDRV_PCM_HW_PARAM_PERIOD_TIME,

		SNDRV_PCM_HW_PARAM_BUFFER_SIZE,

		SNDRV_PCM_HW_PARAM_TICK_TIME,

		-1

	};

	const int *v;

	int err;



	for (v = vars; *v != -1; v++) {

		if (*v != SNDRV_PCM_HW_PARAM_BUFFER_SIZE)

			err = snd_pcm_hw_param_first(pcm, params, *v, NULL);

		else

			err = snd_pcm_hw_param_last(pcm, params, *v, NULL);

		if (snd_BUG_ON(err < 0))

			return err;

	}

	return 0;

}



static int snd_pcm_hw_params(struct snd_pcm_substream *substream,

			     struct snd_pcm_hw_params *params)

{

CRA Git | Maintained and supported by SUSTech CRA and CCSE