[ALSA] PCM - added back TSTAMP ioctl for PCM (for old alsa-lib binaries)

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

2 files changed, 3 insertions, 0 deletions

diff --git a/include/sound/asound.h b/include/sound/asound.h
index 475eb71d65b..eda5c63ea54 100644
--- a/include/sound/asound.h
+++ b/include/sound/asound.h
@@ -443,6 +443,7 @@ enum {
 enum {
         SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
         SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, struct snd_pcm_info),
+        SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
         SNDRV_PCM_IOCTL_TTSTAMP = _IOW('A', 0x03, int),
         SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params),
         SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params),
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 7fb7c921b27..2e7b1e63db9 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2546,6 +2546,8 @@ static int snd_pcm_common_ioctl1(struct file *file,
                 return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0;
         case SNDRV_PCM_IOCTL_INFO:
                 return snd_pcm_info_user(substream, arg);
+        case SNDRV_PCM_IOCTL_TSTAMP:    /* just for compatibility */
+                return 0;
         case SNDRV_PCM_IOCTL_TTSTAMP:
                 return snd_pcm_tstamp(substream, arg);
         case SNDRV_PCM_IOCTL_HW_REFINE: