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[RFC,4/4] ALSA: hda: add default value for max_dma_burst

Message ID 1436350236-17509-5-git-send-email-pierre-louis.bossart@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Pierre-Louis Bossart July 8, 2015, 10:10 a.m. UTC 
set value to 128 bytes for legacy HDAudio, can be overridden
as needed (on a per-stream basis) for enhanced hardware with
more buffering capabilities

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/pci/hda/hda_controller.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index 9444559..958c8f1 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -391,6 +391,7 @@  static struct snd_pcm_hardware azx_pcm_hw = {
 	.periods_min =		2,
 	.periods_max =		AZX_MAX_FRAG,
 	.fifo_size =		0,
+	.max_dma_burst = 128 /* default value for all legacy HDAudio controllers, override as needed */
 };
 
 static int azx_pcm_open(struct snd_pcm_substream *substream)