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author Mark Hills <mark@pogo.org.uk> 1334420363 +0100
committer Takashi Iwai <tiwai@suse.de> 1334497195 +0200

ALSA: snd-usb-audio: Skip un-parseable mixer units instead of erroring

Some interfaces reference endpoints which do not exists. To
accomodate these, do not fail completely, but skip over them.

This allows the Electrix Ebox-44 with earlier firmware to be
detected and used for audio.

Signed-off-by: Mark Hills <mark@pogo.org.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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