From 49045d3d4dc7c43310b1fca693e29fcdbe68faba Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 5 Sep 2005 10:31:05 +0200 Subject: [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 --- sound/usb/usbaudio.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'sound') diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index bfbec587665..da22f25d4ef 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -1439,9 +1439,11 @@ static int snd_usb_pcm_prepare(snd_pcm_substream_t *substream) 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_playback = 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), -- cgit v1.2.3