[ALSA] Fix synchronize_irq() bugs, redundancies

free_irq() calls synchronize_irq() for you, so there is no need for
drivers to manually do the same thing (again).  Thus, calls where
sync-irq immediately precedes free-irq can be simplified.

However, during this audit several bugs were noticed, where free-irq is
preceded by a "irq >= 0" check... but the sync-irq call is not covered
by the same check.

So, where sync-irq could not be eliminated completely, the missing check
was added.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 0 insertions, 2 deletions

diff --git a/sound/pci/au88x0/au88x0.c b/sound/pci/au88x0/au88x0.c
index 26819e2f5761..68368e490074 100644
--- a/sound/pci/au88x0/au88x0.c
+++ b/sound/pci/au88x0/au88x0.c
@@ -126,7 +126,6 @@ static int snd_vortex_dev_free(struct snd_device *device)
         vortex_gameport_unregister(vortex);
         vortex_core_shutdown(vortex);
         // Take down PCI interface.
-        synchronize_irq(vortex->irq);
         free_irq(vortex->irq, vortex);
         iounmap(vortex->mmio);
         pci_release_regions(vortex->pci_dev);
@@ -220,7 +219,6 @@ snd_vortex_create(struct snd_card *card, struct pci_dev *pci, vortex_t ** rchip)
         return 0;
 
       alloc_out:
-        synchronize_irq(chip->irq);
         free_irq(chip->irq, chip);
       irq_out:
         vortex_core_shutdown(chip);