diff options
| author | Takashi Iwai <tiwai@suse.de> | 2007-03-13 21:52:36 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2007-03-14 08:24:18 +0100 |
| commit | 883be7936747f35479ecf94aebf3daf418b7f449 (patch) | |
| tree | e3788bf3e132cea96ed541cdc80f50436b272252 | |
| parent | 0a07acafd6127117db0c20e04302dd8ac9402bc0 (diff) | |
[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>
| -rw-r--r-- | sound/pci/intel8x0.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c index ff65e049114..7cf2dcb9d8d 100644 --- a/sound/pci/intel8x0.c +++ b/sound/pci/intel8x0.c @@ -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); } |