Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=883be7936747f35479ecf94aebf3daf418b7f449
Commit: 883be7936747f35479ecf94aebf3daf418b7f449
Parent: 0a07acafd6127117db0c20e04302dd8ac9402bc0
Author: Takashi Iwai <[EMAIL PROTECTED]>
AuthorDate: Tue Mar 13 21:52:36 2007 +0100
Committer: Jaroslav Kysela <[EMAIL PROTECTED]>
CommitDate: Wed Mar 14 08:24:18 2007 +0100
[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 <[EMAIL PROTECTED]>
Signed-off-by: Jaroslav Kysela <[EMAIL PROTECTED]>
---
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 ff65e04..7cf2dcb 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);
}
-
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