From ebf029da38829ede6b53ac8a5ad45b149064ea16 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 22 Apr 2008 17:28:11 +0200 Subject: [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 --- sound/pci/trident/trident_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'sound/pci/trident') diff --git a/sound/pci/trident/trident_main.c b/sound/pci/trident/trident_main.c index 71138ff9b31..bbcee2c09ae 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); -- cgit v1.2.3