On 2/3/17 10:43 AM, Takashi Iwai wrote:
The PCM engine on LPE audio isn't like a batch-style process, but
rather it deals with the standard ring buffer. Passing the BATCH info
flag is inappropriate.
Humm, this is controversial. There are 4 DMA descriptors and getting a
precise position in the stream is not straightforward. Rewind is also
not supported so if you remove the BATCH flag you will push PulseAudio
into doing timer-based scheduling and rewinds that probably don't work.
Similarly, the DOUBLE flag is also superfluous. Drop both bits.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
sound/x86/intel_hdmi_audio.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index c83f02c2593e..32a21422e6f5 100644
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -131,10 +131,8 @@ static const struct channel_map_table map_tables[] = {
/* hardware capability structure */
static const struct snd_pcm_hardware snd_intel_hadstream = {
.info = (SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_DOUBLE |
SNDRV_PCM_INFO_MMAP|
- SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_BATCH),
+ SNDRV_PCM_INFO_MMAP_VALID),
.formats = (SNDRV_PCM_FMTBIT_S24 |
SNDRV_PCM_FMTBIT_U24),
.rates = SNDRV_PCM_RATE_32000 |
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