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[ALSA] intel8x0 - Fix Oops at kdump crash kernel
Fixed Oops at crash kernel from intel8x0 driver that is triggered from interrupt handler. Proper irqsave version seems needed for kexec/kdump. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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0a07acafd6
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1 changed files with 3 additions and 2 deletions
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@ -725,10 +725,11 @@ static void fill_nocache(void *buf, int size, int nocache)
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static inline void snd_intel8x0_update(struct intel8x0 *chip, struct ichdev *ichdev)
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{
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unsigned long port = ichdev->reg_offset;
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unsigned long flags;
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int status, civ, i, step;
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int ack = 0;
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spin_lock(&chip->reg_lock);
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spin_lock_irqsave(&chip->reg_lock, flags);
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status = igetbyte(chip, port + ichdev->roff_sr);
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civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
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if (!(status & ICH_BCIS)) {
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@ -768,7 +769,7 @@ static inline void snd_intel8x0_update(struct intel8x0 *chip, struct ichdev *ich
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ack = 1;
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}
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}
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spin_unlock(&chip->reg_lock);
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spin_unlock_irqrestore(&chip->reg_lock, flags);
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if (ack && ichdev->substream) {
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snd_pcm_period_elapsed(ichdev->substream);
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}
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