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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/trident/trident_main.c | |
| parent | 6b9a9b329640b7e8143df7b2782884ea758650f7 (diff) | |
| download | linux-ebf029da38829ede6b53ac8a5ad45b149064ea16.tar.gz linux-ebf029da38829ede6b53ac8a5ad45b149064ea16.tar.bz2 linux-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/trident/trident_main.c')
| -rw-r--r-- | sound/pci/trident/trident_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/pci/trident/trident_main.c b/sound/pci/trident/trident_main.c index 71138ff9b310..bbcee2c09ae4 100644 --- a/sound/pci/trident/trident_main.c +++ b/sound/pci/trident/trident_main.c @@ -3676,6 +3676,8 @@ static int snd_trident_free(struct snd_trident *trident) else if (trident->device == TRIDENT_DEVICE_ID_SI7018) { outl(0, TRID_REG(trident, SI_SERIAL_INTF_CTRL)); } + if (trident->irq >= 0) + free_irq(trident->irq, trident); if (trident->tlb.buffer.area) { outl(0, TRID_REG(trident, NX_TLBC)); if (trident->tlb.memhdr) @@ -3685,8 +3687,6 @@ static int snd_trident_free(struct snd_trident *trident) vfree(trident->tlb.shadow_entries); snd_dma_free_pages(&trident->tlb.buffer); } - if (trident->irq >= 0) - free_irq(trident->irq, trident); pci_release_regions(trident->pci); pci_disable_device(trident->pci); kfree(trident); |