https://github.com/torvalds/linux
Revision 83ea5d18d74f032a760fecde78c0210f66f7f70c authored by Daniel Mack on 19 March 2013, 20:09:25 UTC, committed by Takashi Iwai on 20 March 2013, 07:43:00 UTC
Creation of individual mixer controls may fail, but that shouldn't cause
the entire mixer creation to fail. Even worse, if the mixer creation
fails, that will error out the entire device probing.

All the functions called by parse_audio_unit() should return -EINVAL if
they find descriptors that are unsupported or believed to be malformed,
so we can safely handle this error code as a non-fatal condition in
snd_usb_mixer_controls().

That fixes a long standing bug which is commonly worked around by
adding quirks which make the driver ignore entire interfaces. Some of
them might now be unnecessary.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Reported-and-tested-by: Rodolfo Thomazelli <pe.soberbo@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 parent 4d7b86c
History
Tip revision: 83ea5d18d74f032a760fecde78c0210f66f7f70c authored by Daniel Mack on 19 March 2013, 20:09:25 UTC
ALSA: snd-usb: mixer: ignore -EINVAL in snd_usb_mixer_controls()
Tip revision: 83ea5d1
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.gitignore -rw-r--r-- 1.1 KB
.mailmap -rw-r--r-- 4.4 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 92.8 KB
Kbuild -rw-r--r-- 2.5 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 243.5 KB
Makefile -rw-r--r-- 47.0 KB
README -rw-r--r-- 18.3 KB
REPORTING-BUGS -rw-r--r-- 3.3 KB

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