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authorTakashi Iwai <tiwai@suse.de>2008-04-22 17:28:11 +0200
committerTakashi Iwai <tiwai@suse.de>2008-04-24 12:00:41 +0200
commitebf029da38829ede6b53ac8a5ad45b149064ea16 (patch)
treeaebf6bddd245a874577fc321978b3f7137e8ac39 /sound/pci/nm256
parent6b9a9b329640b7e8143df7b2782884ea758650f7 (diff)
downloadlinux-ebf029da38829ede6b53ac8a5ad45b149064ea16.tar.bz2
[ALSA] Fix possible races at free_irq in PCI drivers
The irq handler of PCI drivers must be released before releasing other resources since the handler for a shared irq can be still called and may access the freed resource again. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/nm256')
-rw-r--r--sound/pci/nm256/nm256.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/sound/pci/nm256/nm256.c b/sound/pci/nm256/nm256.c
index 7ac654e381da..7efb838d18a6 100644
--- a/sound/pci/nm256/nm256.c
+++ b/sound/pci/nm256/nm256.c
@@ -1439,7 +1439,7 @@ static int snd_nm256_free(struct nm256 *chip)
snd_nm256_capture_stop(chip);
if (chip->irq >= 0)
- synchronize_irq(chip->irq);
+ free_irq(chip->irq, chip);
if (chip->cport)
iounmap(chip->cport);
@@ -1447,8 +1447,6 @@ static int snd_nm256_free(struct nm256 *chip)
iounmap(chip->buffer);
release_and_free_resource(chip->res_cport);
release_and_free_resource(chip->res_buffer);
- if (chip->irq >= 0)
- free_irq(chip->irq, chip);
pci_disable_device(chip->pci);
kfree(chip->ac97_regs);