ALSA: usb-audio: fix PCM device order

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Some cards have alternate setting with non-PCM format as the first
altsetting in the interface descriptors. This confuses userspace, since
alsa-lib uses device 0 by default. So lets parse interfaces in two steps:
 1. Parse altsettings with PCM formats.
 2. Parse altsettings with non-PCM formats.

This fixes at least following cards:
 - Audinst HUD-mx2
 - Audinst HUD-mini

[ Adapted to 5.3 kernel by tiwai ]

Signed-off-by: Alexander Tsoy <alexander@tsoy.me>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Alexander Tsoy 2017-08-11 02:36:14 +03:00 • committed by Takashi Iwai

parent c1ae5e7f05

commit f7f5301814

1 changed files with 33 additions and 1 deletions

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sound/usb/stream.c

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