tree 60d48ea825579d8df50836fd921668a2320adbe6
parent edd1365e90eb32625041d09de427d7b03461bc5c
author Clemens Ladisch <clemens@ladisch.de> 1251180941 +0200
committer Takashi Iwai <tiwai@suse.de> 1251183154 +0200

sound: pcm_lib: fix unsorted list constraint handling

snd_interval_list() expected a sorted list but did not document this, so
there are drivers that give it an unsorted list.  To fix this, change
the algorithm to work with any list.

This fixes the "Slave PCM not usable" error with USB devices that have
multiple alternate settings with sample rates in decreasing order, such
as the Philips Askey VC010 WebCam.

http://bugzilla.kernel.org/show_bug.cgi?id=14028

Reported-and-tested-by: Andrzej <adkadk@gmail.com>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>