commit 49045d3d4dc7c43310b1fca693e29fcdbe68faba
author Clemens Ladisch <clemens@ladisch.de> Mon Sep 05 10:31:05 2005 +0200
committer Jaroslav Kysela <perex@suse.cz> Mon Sep 12 10:41:10 2005 +0200
tree 88350108174f69eaca455c79df3a718c3f3b7333
parent 025cd2f6b1624f536d4df564add3d13ea5022f53

[ALSA] usb-audio: add SNDRV_PCM_INFO_BATCH flag

USB generic driver
Add the SNDRV_PCM_INFO_BATCH flag to the PCM hardware information to
indicate that the driver uses double buffering.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

sound/usb/usbaudio.c

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index bfbec58..da22f25 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -1439,9 +1439,11 @@
 
 static snd_pcm_hardware_t snd_usb_playback =
 {
-	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
-				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
-				 SNDRV_PCM_INFO_MMAP_VALID),
+	.info =			SNDRV_PCM_INFO_MMAP |
+				SNDRV_PCM_INFO_MMAP_VALID |
+				SNDRV_PCM_INFO_BATCH |
+				SNDRV_PCM_INFO_INTERLEAVED |
+				SNDRV_PCM_INFO_BLOCK_TRANSFER,
 	.buffer_bytes_max =	(256*1024),
 	.period_bytes_min =	64,
 	.period_bytes_max =	(128*1024),
@@ -1451,9 +1453,11 @@
 
 static snd_pcm_hardware_t snd_usb_capture =
 {
-	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
-				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
-				 SNDRV_PCM_INFO_MMAP_VALID),
+	.info =			SNDRV_PCM_INFO_MMAP |
+				SNDRV_PCM_INFO_MMAP_VALID |
+				SNDRV_PCM_INFO_BATCH |
+				SNDRV_PCM_INFO_INTERLEAVED |
+				SNDRV_PCM_INFO_BLOCK_TRANSFER,
 	.buffer_bytes_max =	(256*1024),
 	.period_bytes_min =	64,
 	.period_bytes_max =	(128*1024),