ALSA: snd-usb-caiaq: fix reported elapsed periods

Reset the internal period position counter upon stream startup. This
fixes initial aplay underruns and problems related to latency picky
applications such as pulseaudio.

Bumped the version number to 1.3.14.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 7 insertions, 5 deletions

diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index 3f45c0fe61ab..b13ce767ac72 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -195,11 +195,14 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
 
         debug("%s(%p)\n", __func__, substream);
         
-        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+                dev->period_out_count[index] = BYTES_PER_SAMPLE + 1;
                 dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1;
-        else
+        } else {
+                dev->period_in_count[index] = BYTES_PER_SAMPLE;
                 dev->audio_in_buf_pos[index] = BYTES_PER_SAMPLE;
-        
+        }
+
         if (dev->streaming)
                 return 0;
         
@@ -300,8 +303,7 @@ static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
                 if (!sub)
                         continue;
 
-                pb = frames_to_bytes(sub->runtime, 
-                                     sub->runtime->period_size);
+                pb = snd_pcm_lib_period_bytes(sub);
                 cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
                                         &dev->period_out_count[stream] :
                                         &dev->period_in_count[stream];