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

[Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>]

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(+)

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)
-- 
1.9.1