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| author | Timo Wischer <twischer@de.adit-jv.com> | 2018-07-10 17:28:45 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-07-11 08:49:59 +0200 |
| commit | ff2d6acdf6f13d9f8fdcd890844c6d7535ac1f10 (patch) | |
| tree | f38622f0ffdcc524b4936d1a8156bec14868387c /sound/core/pcm_lib.c | |
| parent | ALSA: pcm: Allow drivers to set R/W wait time. (diff) | |
| download | linux-ff2d6acdf6f13d9f8fdcd890844c6d7535ac1f10.tar.xz linux-ff2d6acdf6f13d9f8fdcd890844c6d7535ac1f10.zip | |
ALSA: pcm: Fix snd_interval_refine first/last with open min/max
Without this commit the following intervals [x y), (x y) were be
replaced to (y-1 y) by snd_interval_refine_last(). This was also done
if y-1 is part of the previous interval.
With this changes it will be replaced with [y-1 y) in case of y-1 is
part of the previous interval. A similar behavior will be used for
snd_interval_refine_first().
This commit adapts the changes for alsa-lib of commit
9bb985c ("pcm: snd_interval_refine_first/last: exclude value only if
also excluded before")
Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/pcm_lib.c')
| -rw-r--r-- | sound/core/pcm_lib.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 5736860f325b..4e6110d778bd 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -627,27 +627,33 @@ EXPORT_SYMBOL(snd_interval_refine); static int snd_interval_refine_first(struct snd_interval *i) { + const unsigned int last_max = i->max; + if (snd_BUG_ON(snd_interval_empty(i))) return -EINVAL; if (snd_interval_single(i)) return 0; i->max = i->min; - i->openmax = i->openmin; - if (i->openmax) + if (i->openmin) i->max++; + /* only exclude max value if also excluded before refine */ + i->openmax = (i->openmax && i->max >= last_max); return 1; } static int snd_interval_refine_last(struct snd_interval *i) { + const unsigned int last_min = i->min; + if (snd_BUG_ON(snd_interval_empty(i))) return -EINVAL; if (snd_interval_single(i)) return 0; i->min = i->max; - i->openmin = i->openmax; - if (i->openmin) + if (i->openmax) i->min--; + /* only exclude min value if also excluded before refine */ + i->openmin = (i->openmin && i->min <= last_min); return 1; } |