ALSA: usb-audio: Fix potential zero-division at parsing FU

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parse_audio_feature_unit() contains a code dividing potentially with
zero when a malformed FU descriptor is passed.  Although there is
already a sanity check, it checks only the value zero, hence it can
still lead to a zero-division when a value 1 is passed there.

Fix it by correcting the sanity check (and the error message
thereof).

Fixes: 23caaf19b1 ("ALSA: usb-mixer: Add support for Audio Class v2.0")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Takashi Iwai 2017-11-21 17:07:43 +01:00

parent f658f17b5e

commit 8428a8ebde

1 changed files with 2 additions and 2 deletions

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sound/usb/mixer.c

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