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ALSA: usb-audio: correct the value cache check.

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The check of cval->cached should be zero-based (including master channel).

Signed-off-by: Yao-Wen Mao <yaowen@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Yao-Wen Mao 2015-08-28 16:33:25 +08:00 committed by Takashi Iwai
parent 0662292aec
commit 6aa6925cad
1 changed files with 1 additions and 1 deletions
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2
sound/usb/mixer.c
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@ -2540,7 +2540,7 @@ static int restore_mixer_value(struct usb_mixer_elem_list *list)
for (c = 0; c < MAX_CHANNELS; c++) { for (c = 0; c < MAX_CHANNELS; c++) {
if (!(cval->cmask & (1 << c))) if (!(cval->cmask & (1 << c)))
continue; continue;
if (cval->cached & (1 << c)) { if (cval->cached & (1 << (c + 1))) {
err = snd_usb_set_cur_mix_value(cval, c + 1, idx, err = snd_usb_set_cur_mix_value(cval, c + 1, idx,
cval->cache_val[idx]); cval->cache_val[idx]);
if (err < 0) if (err < 0)