ALSA: usb-audio - Don't expose broken dB ranges

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Some crappy USB-audio devices give broken dB ranges, e.g. both min and max
are 0dB.  This confuses the volume control that prefers dB expression such
as alsactl or PulseAudio.  In such a case, it's much better not to expose
the broken dB information.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Takashi Iwai 2011-04-28 09:58:43 +02:00

parent 13eb4ab8ca

commit 59bb7f0eeb

1 changed files with 6 additions and 4 deletions

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sound/usb/mixer.c

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