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Date:	Thu, 6 Feb 2014 09:41:48 +0100
From:	Jean-Francois Moine <>
Subject: [PATCH] ALSA: pcm: export some constraint functions

The functions snd_pcm_hw_constraint_mask() and
snd_pcm_hw_constraint_mask64() are needed to add audio constraints
to substreams at open/startup time.
This patch makes them available to ALSA modules.

Signed-off-by: Jean-Francois Moine <>
 sound/core/pcm_lib.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index a210467..aea4972 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1219,6 +1219,7 @@ int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, snd_pcm_hw_param
 		return -EINVAL;
 	return 0;
  * snd_pcm_hw_constraint_mask64 - apply the given bitmap mask constraint
@@ -1242,6 +1243,7 @@ int snd_pcm_hw_constraint_mask64(struct snd_pcm_runtime *runtime, snd_pcm_hw_par
 		return -EINVAL;
 	return 0;
  * snd_pcm_hw_constraint_integer - apply an integer constraint to an interval

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