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ALSA: pcm: Fix interval evaluation with openmin/max 

As addressed in alsa-lib (commit b420056604f0), we need to fix the
case where the evaluation of PCM interval "(x x+1]" leading to
-EINVAL.  After applying rules, such an interval may be translated as
"(x x+1)".

Fixes: ff2d6acdf6 ("ALSA: pcm: Fix snd_interval_refine first/last with open min/max")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2018-11-29 12:05:19 +01:00
parent 3deef52ce1
commit 5363857b91
1 changed files with 3 additions and 1 deletions
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4
include/sound/pcm_params.h
View File

@ -254,11 +254,13 @@ static inline int snd_interval_empty(const struct snd_interval *i)
static inline int snd_interval_single(const struct snd_interval *i)
{
return (i->min == i->max ||
(i->min + 1 == i->max && i->openmax));
(i->min + 1 == i->max && (i->openmin || i->openmax)));
}
static inline int snd_interval_value(const struct snd_interval *i)
{
if (i->openmin && !i->openmax)
return i->max;
return i->min;
}