ALSA: opl3: Fix possible negative array index access
Spotted by coverity CID 115196. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -390,6 +390,11 @@ void snd_opl3_note_on(void *p, int note, int vel, struct snd_midi_channel *chan)
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voice = snd_opl3_oss_map[chan->number];
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}
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if (voice < 0) {
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spin_unlock_irqrestore(&opl3->voice_lock, flags);
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return;
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}
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if (voice < MAX_OPL2_VOICES) {
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/* Left register block for voices 0 .. 8 */
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reg_side = OPL3_LEFT;
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