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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/emu10k1/emu10k1x.c
parent6b9a9b329640b7e8143df7b2782884ea758650f7 (diff)
downloadop-kernel-dev-ebf029da38829ede6b53ac8a5ad45b149064ea16.zip
op-kernel-dev-ebf029da38829ede6b53ac8a5ad45b149064ea16.tar.gz
[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/emu10k1/emu10k1x.c')
-rw-r--r--sound/pci/emu10k1/emu10k1x.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c
index 341f34e..491a4a5 100644
--- a/sound/pci/emu10k1/emu10k1x.c
+++ b/sound/pci/emu10k1/emu10k1x.c
@@ -754,13 +754,13 @@ static int snd_emu10k1x_free(struct emu10k1x *chip)
// disable audio
outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
- // release the i/o port
- release_and_free_resource(chip->res_port);
-
- // release the irq
+ /* release the irq */
if (chip->irq >= 0)
free_irq(chip->irq, chip);
+ // release the i/o port
+ release_and_free_resource(chip->res_port);
+
// release the DMA
if (chip->dma_buffer.area) {
snd_dma_free_pages(&chip->dma_buffer);
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