@@ -194,7 +194,7 @@ struct snd_pcm_status32 {
u32 avail_max;
u32 overrange;
s32 suspended_state;
- u32 reserved_alignment;
+ u32 audio_tstamp_data;
struct compat_timespec audio_tstamp;
unsigned char reserved[56-sizeof(struct compat_timespec)];
} __attribute__((packed));
@@ -206,6 +206,10 @@ static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
struct snd_pcm_status status;
int err;
+ /* fetch audio_stamp_config from user-space */
+ if (get_user(status.audio_tstamp_data, &src->audio_tstamp_data))
+ return -EFAULT;
+
err = snd_pcm_status(substream, &status);
if (err < 0)
return err;
@@ -222,6 +226,7 @@ static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
put_user(status.avail_max, &src->avail_max) ||
put_user(status.overrange, &src->overrange) ||
put_user(status.suspended_state, &src->suspended_state) ||
+ put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp))
return -EFAULT;
Let userspace select audio timestamp config, ignore and zero all other fields Use audio_tstamp_data to retrieve config and pass report back to user space Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> --- sound/core/pcm_compat.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)