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| author | Takashi Iwai <tiwai@suse.de> | 2008-04-22 17:28:11 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2008-04-24 12:00:41 +0200 |
| commit | ebf029da38829ede6b53ac8a5ad45b149064ea16 (patch) | |
| tree | aebf6bddd245a874577fc321978b3f7137e8ac39 /sound/pci/nm256 | |
| parent | 6b9a9b329640b7e8143df7b2782884ea758650f7 (diff) | |
| download | linux-exynos-ebf029da38829ede6b53ac8a5ad45b149064ea16.tar.gz linux-exynos-ebf029da38829ede6b53ac8a5ad45b149064ea16.tar.bz2 linux-exynos-ebf029da38829ede6b53ac8a5ad45b149064ea16.zip | |
[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.c | 4 |
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); |