Commit 883be793 authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela

[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: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 0a07acaf
......@@ -725,10 +725,11 @@ static void fill_nocache(void *buf, int size, int nocache)
static inline void snd_intel8x0_update(struct intel8x0 *chip, struct ichdev *ichdev)
{
unsigned long port = ichdev->reg_offset;
unsigned long flags;
int status, civ, i, step;
int ack = 0;
spin_lock(&chip->reg_lock);
spin_lock_irqsave(&chip->reg_lock, flags);
status = igetbyte(chip, port + ichdev->roff_sr);
civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
if (!(status & ICH_BCIS)) {
......@@ -768,7 +769,7 @@ static inline void snd_intel8x0_update(struct intel8x0 *chip, struct ichdev *ich
ack = 1;
}
}
spin_unlock(&chip->reg_lock);
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (ack && ichdev->substream) {
snd_pcm_period_elapsed(ichdev->substream);
}
......
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