[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>
diff --git a/sound/pci/es1938.c b/sound/pci/es1938.c
index 1a314fa..84fac1f 100644
--- a/sound/pci/es1938.c
+++ b/sound/pci/es1938.c
@@ -1488,7 +1488,6 @@
outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
if (chip->irq >= 0) {
- synchronize_irq(chip->irq);
free_irq(chip->irq, chip);
chip->irq = -1;
}
@@ -1578,10 +1577,8 @@
snd_es1938_free_gameport(chip);
- if (chip->irq >= 0) {
- synchronize_irq(chip->irq);
+ if (chip->irq >= 0)
free_irq(chip->irq, chip);
- }
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);