[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, 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);