Commit 92c01d8f authored Nov 29, 2018 by Takashi Iwai Committed by Greg Kroah-Hartman Dec 13, 2018

ALSA: pcm: Fix interval evaluation with openmin/max



commit 5363857b916c1f48027e9b96ee8be8376bf20811 upstream.

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: ff2d6acdf6f1 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 1b5c6d03

include/sound/pcm_params.h

+3 −1

Original line number	Diff line number	Diff line
		@@ -247,11 +247,13 @@ 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;
		}