This is a note to let you know that I've just added the patch titled
ALSA: hdspm - Constrain periods to 2 on older cards
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-hdspm-constrain-periods-to-2-on-older-cards.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f0153c3d948c1764f6c920a0675d86fc1d75813e Mon Sep 17 00:00:00 2001
From: Adrian Knoth <adi@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 10 Feb 2015 11:33:50 +0100
Subject: ALSA: hdspm - Constrain periods to 2 on older cards
From: Adrian Knoth <adi@xxxxxxxxxxxxxxxxxxxxx>
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 <adi@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/pci/rme9652/hdspm.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -5863,6 +5863,12 @@ static int snd_hdspm_capture_open(struct
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);
+ snd_pcm_hw_constraint_minmax(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS,
+ 2, 2);
break;
}
Patches currently in stable-queue which might be from adi@xxxxxxxxxxxxxxxxxxxxx are
queue-3.10/alsa-hdspm-constrain-periods-to-2-on-older-cards.patch
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