[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>

1 files changed, 4 insertions, 4 deletions

diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c
index 341f34e19f3..491a4a50f86 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);