ALSA: pcm: remove SNDRV_PCM_IOCTL1_INFO internal command

commit e11f0f90a626f93899687b1cc909ee37dd6c5809 upstream.

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: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index af1fb37..b1d3cce 100644 (file)
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -100,7 +100,7 @@ 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

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index f57a58a..3acb373 100644 (file)
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1849,8 +1849,6 @@ 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:

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index f5eb10f..b480984 100644 (file)
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -214,11 +214,7 @@ 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;
 }