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hda-audio: fix non-mixer codecs

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They don't advertise mixer support, but still allow the guest change
mixer settings.  Add a check to avoid it.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2014-04-17 12:43:26 +02:00
parent e2da502c00
commit 4843877e5d
1 changed files with 3 additions and 0 deletions
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3
hw/audio/hda-codec.c
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@ -261,6 +261,9 @@ static void hda_audio_set_amp(HDAAudioStream *st)
left = left * 255 / QEMU_HDA_AMP_STEPS;
right = right * 255 / QEMU_HDA_AMP_STEPS;
if (!st->state->mixer) {
return;
}
if (st->output) {
AUD_set_volume_out(st->voice.out, muted, left, right);
} else {