Andreas Matthus wrote:
> Feb 19 19:17:01 mahome1 kernel: RIP: 0010:[<ffffffff88486a52>]
> [<ffffffff88486a52>] :snd_bt87x:snd_bt87x_interrupt+0x13/0x1b8
> ...
> Feb 19 19:17:01 mahome1 kernel: [<ffffffff80262739>] free_irq+0xf6/0x141
> Feb 19 19:17:01 mahome1 kernel: [<ffffffff884861f2>]
> :snd_bt87x:snd_bt87x_free+0x34/0x52
This is caused a bug in the driver (it calls iounmap() before
free_irq()).
The patch below fixes this (I just applied it to the ALSA tree);
or you could disable CONFIG_DEBUG_SHIRQ.
Regards,
Clemens
--
bt87X: fix freeing of shared interrupt
Call free_irq() after iounmap() because other devices could trigger our
shared interrupt handler.
Signed-off-by: Clemens Ladisch <[EMAIL PROTECTED]>
--- linux.orig/sound/pci/bt87x.c Tue Feb 19 15:03:57 2008 +0100
+++ linux/sound/pci/bt87x.c Wed Feb 20 08:55:18 2008 +0100
@@ -681,15 +681,12 @@ static struct snd_kcontrol_new snd_bt87x
static int snd_bt87x_free(struct snd_bt87x *chip)
{
- if (chip->mmio) {
+ if (chip->mmio)
snd_bt87x_stop(chip);
- if (chip->irq >= 0)
- synchronize_irq(chip->irq);
-
- iounmap(chip->mmio);
- }
if (chip->irq >= 0)
free_irq(chip->irq, chip);
+ if (chip->mmio)
+ iounmap(chip->mmio);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
--
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