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Commit e11f0f90 authored by Takashi Sakamoto's avatar Takashi Sakamoto Committed by Takashi Iwai
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ALSA: pcm: remove SNDRV_PCM_IOCTL1_INFO internal command 



Drivers can implement 'struct snd_pcm_ops.ioctl' to handle some requests
from ALSA PCM core. These requests are internal purpose in kernel land.
Usually common set of operations are used for it.

SNDRV_PCM_IOCTL1_INFO is one of the requests. According to code comment,
it has been obsoleted in the old days.

We can see old releases in ftp.alsa-project.org. The command was firstly
introduced in v0.5.0 release as SND_PCM_IOCTL1_INFO, to allow drivers to
fill data of 'struct snd_pcm_channel_info' type. In v0.9.0 release,
this was obsoleted by the other commands for ioctl(2) such as
SNDRV_PCM_IOCTL_CHANNEL_INFO.

This commit removes the long-abandoned command, bye.

Signed-off-by: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f8ff2f28

include/sound/pcm.h

+1 −1
Original line number Diff line number Diff line
@@ -102,7 +102,7 @@ struct snd_pcm_ops { 
#endif



#define SNDRV_PCM_IOCTL1_RESET		0

#define SNDRV_PCM_IOCTL1_INFO		1

/* 1 is absent slot. */

#define SNDRV_PCM_IOCTL1_CHANNEL_INFO	2

#define SNDRV_PCM_IOCTL1_GSTATE		3

#define SNDRV_PCM_IOCTL1_FIFO_SIZE	4

sound/core/pcm_lib.c

+0 −2
Original line number Diff line number Diff line
@@ -1787,8 +1787,6 @@ int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, 
		      unsigned int cmd, void *arg)

{

	switch (cmd) {

	case SNDRV_PCM_IOCTL1_INFO:

		return 0;

	case SNDRV_PCM_IOCTL1_RESET:

		return snd_pcm_lib_ioctl_reset(substream, arg);

	case SNDRV_PCM_IOCTL1_CHANNEL_INFO:

sound/core/pcm_native.c

+1 −5
Original line number Diff line number Diff line
@@ -212,11 +212,7 @@ int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) 
	info->subdevices_avail = pstr->substream_count - pstr->substream_opened;

	strlcpy(info->subname, substream->name, sizeof(info->subname));

	runtime = substream->runtime;

	/* AB: FIXME!!! This is definitely nonsense */

	if (runtime) {

		info->sync = runtime->sync;

		substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info);

	}



	return 0;

}