From 3962a253b21474940c8b858ec0aff0428c2c3e82 Mon Sep 17 00:00:00 2001 From: Adrian Knoth Date: Tue, 10 Feb 2015 11:33:50 +0100 Subject: ALSA: hdspm - Constrain periods to 2 on older cards commit f0153c3d948c1764f6c920a0675d86fc1d75813e upstream. RME RayDAT and AIO use a fixed buffer size of 16384 samples. With period sizes of 32-4096, this translates to 4-512 periods. The older RME cards have a variable buffer size but require exactly two periods. This patch enforces nperiods=2 on those cards. Signed-off-by: Adrian Knoth Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/pci/rme9652/hdspm.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'sound/pci') diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c index 9ea05e956474..dd910d249987 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -5789,6 +5789,9 @@ static int snd_hdspm_playback_open(struct snd_pcm_substream *substream) snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 64, 8192); + snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_PERIODS, + 2, 2); break; } @@ -5863,6 +5866,9 @@ static int snd_hdspm_capture_open(struct snd_pcm_substream *substream) snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 64, 8192); + snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_PERIODS, + 2, 2); break; } -- cgit v1.2.3