diff options
| author | Ingo Molnar <mingo@elte.hu> | 2011-07-21 17:59:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-07-21 18:00:01 +0200 |
| commit | 994bf1c92270e3d7731ea08f1d1bd7a668314e60 (patch) | |
| tree | 4409a21eab486e53fbe350a66e8a4f28b7a720c0 /sound/soc/blackfin/bf5xx-i2s-pcm.c | |
| parent | bd96efe17d945f0bad56d592f8686dc6309905e7 (diff) | |
| parent | cf6ace16a3cd8b728fb0afa68368fd40bbeae19f (diff) | |
Merge branch 'linus' into sched/core
Merge reason: pick up the latest scheduler fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'sound/soc/blackfin/bf5xx-i2s-pcm.c')
| -rw-r--r-- | sound/soc/blackfin/bf5xx-i2s-pcm.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/sound/soc/blackfin/bf5xx-i2s-pcm.c b/sound/soc/blackfin/bf5xx-i2s-pcm.c index b5101efd1c87..f1fd95bb6416 100644 --- a/sound/soc/blackfin/bf5xx-i2s-pcm.c +++ b/sound/soc/blackfin/bf5xx-i2s-pcm.c @@ -138,11 +138,20 @@ static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream) pr_debug("%s enter\n", __func__); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { diff = sport_curr_offset_tx(sport); - frames = bytes_to_frames(substream->runtime, diff); } else { diff = sport_curr_offset_rx(sport); - frames = bytes_to_frames(substream->runtime, diff); } + + /* + * TX at least can report one frame beyond the end of the + * buffer if we hit the wraparound case - clamp to within the + * buffer as the ALSA APIs require. + */ + if (diff == snd_pcm_lib_buffer_bytes(substream)) + diff = 0; + + frames = bytes_to_frames(substream->runtime, diff); + return frames; } |