[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/ad1889.c b/sound/pci/ad1889.c
index 1edb644..39ec55b 100644
--- a/sound/pci/ad1889.c
+++ b/sound/pci/ad1889.c
@@ -854,8 +854,6 @@
spin_unlock_irq(&chip->lock);
- synchronize_irq(chip->irq);
-
if (chip->irq >= 0)
free_irq(chip->irq, chip);
diff --git a/sound/pci/ali5451/ali5451.c b/sound/pci/ali5451/ali5451.c
index fc04d3d..1a0fd65 100644
--- a/sound/pci/ali5451/ali5451.c
+++ b/sound/pci/ali5451/ali5451.c
@@ -2047,10 +2047,8 @@
{
if (codec->hw_initialized)
snd_ali_disable_address_interrupt(codec);
- if (codec->irq >= 0) {
- synchronize_irq(codec->irq);
+ if (codec->irq >= 0)
free_irq(codec->irq, codec);
- }
if (codec->port)
pci_release_regions(codec->pci);
pci_disable_device(codec->pci);
diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index 4594186..457228f 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -1553,7 +1553,7 @@
if (chip->irq < 0)
goto __hw_end;
snd_atiixp_chip_stop(chip);
- synchronize_irq(chip->irq);
+
__hw_end:
if (chip->irq >= 0)
free_irq(chip->irq, chip);
diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
index a67a869..d457a32 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -1197,7 +1197,7 @@
if (chip->irq < 0)
goto __hw_end;
snd_atiixp_chip_stop(chip);
- synchronize_irq(chip->irq);
+
__hw_end:
if (chip->irq >= 0)
free_irq(chip->irq, chip);
diff --git a/sound/pci/au88x0/au88x0.c b/sound/pci/au88x0/au88x0.c
index 26819e2..68368e4 100644
--- a/sound/pci/au88x0/au88x0.c
+++ b/sound/pci/au88x0/au88x0.c
@@ -126,7 +126,6 @@
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 @@
return 0;
alloc_out:
- synchronize_irq(chip->irq);
free_irq(chip->irq, chip);
irq_out:
vortex_core_shutdown(chip);
diff --git a/sound/pci/azt3328.c b/sound/pci/azt3328.c
index be87d31..5f63af6 100644
--- a/sound/pci/azt3328.c
+++ b/sound/pci/azt3328.c
@@ -1514,7 +1514,8 @@
/* well, at least we know how to disable the timer IRQ */
snd_azf3328_codec_outb(chip, IDX_IO_TIMER_VALUE + 3, 0x00);
- synchronize_irq(chip->irq);
+ if (chip->irq >= 0)
+ synchronize_irq(chip->irq);
__end_hw:
snd_azf3328_free_joystick(chip);
if (chip->irq >= 0)
diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c
index 4074584..9971b5b 100644
--- a/sound/pci/cmipci.c
+++ b/sound/pci/cmipci.c
@@ -2933,8 +2933,6 @@
/* reset mixer */
snd_cmipci_mixer_write(cm, 0, 0);
- synchronize_irq(cm->irq);
-
free_irq(cm->irq, cm);
}
diff --git a/sound/pci/ens1370.c b/sound/pci/ens1370.c
index 52fae4a..fbf1124 100644
--- a/sound/pci/ens1370.c
+++ b/sound/pci/ens1370.c
@@ -1910,7 +1910,8 @@
outl(0, ES_REG(ensoniq, CONTROL)); /* switch everything off */
outl(0, ES_REG(ensoniq, SERIAL)); /* clear serial interface */
#endif
- synchronize_irq(ensoniq->irq);
+ if (ensoniq->irq >= 0)
+ synchronize_irq(ensoniq->irq);
pci_set_power_state(ensoniq->pci, 3);
__hw_end:
#ifdef CHIP1370
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);
diff --git a/sound/pci/es1968.c b/sound/pci/es1968.c
index 1383798..1bf298d 100644
--- a/sound/pci/es1968.c
+++ b/sound/pci/es1968.c
@@ -2475,7 +2475,8 @@
static int snd_es1968_free(struct es1968 *chip)
{
if (chip->io_port) {
- synchronize_irq(chip->irq);
+ if (chip->irq >= 0)
+ synchronize_irq(chip->irq);
outw(1, chip->io_port + 0x04); /* clear WP interrupts */
outw(0, chip->io_port + ESM_PORT_HOST_IRQ); /* disable IRQ */
}
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index bc3867e..b3a618e 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1682,7 +1682,6 @@
snd_hda_suspend(chip->bus, state);
azx_stop_chip(chip);
if (chip->irq >= 0) {
- synchronize_irq(chip->irq);
free_irq(chip->irq, chip);
chip->irq = -1;
}
@@ -1738,10 +1737,8 @@
azx_stop_chip(chip);
}
- if (chip->irq >= 0) {
- synchronize_irq(chip->irq);
+ if (chip->irq >= 0)
free_irq(chip->irq, (void*)chip);
- }
if (chip->msi)
pci_disable_msi(chip->pci);
if (chip->remap_addr)
diff --git a/sound/pci/ice1712/ice1712.c b/sound/pci/ice1712/ice1712.c
index 38e93ca..29d449d 100644
--- a/sound/pci/ice1712/ice1712.c
+++ b/sound/pci/ice1712/ice1712.c
@@ -2490,10 +2490,9 @@
outb(0xff, ICEREG(ice, IRQMASK));
/* --- */
__hw_end:
- if (ice->irq >= 0) {
- synchronize_irq(ice->irq);
+ if (ice->irq >= 0)
free_irq(ice->irq, ice);
- }
+
if (ice->port)
pci_release_regions(ice->pci);
snd_ice1712_akm4xxx_free(ice);
diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c
index 6b15e1c..13ea94f 100644
--- a/sound/pci/ice1712/ice1724.c
+++ b/sound/pci/ice1712/ice1724.c
@@ -2153,10 +2153,8 @@
outb(0xff, ICEREG1724(ice, IRQMASK));
/* --- */
__hw_end:
- if (ice->irq >= 0) {
- synchronize_irq(ice->irq);
+ if (ice->irq >= 0)
free_irq(ice->irq, ice);
- }
pci_release_regions(ice->pci);
snd_ice1712_akm4xxx_free(ice);
pci_disable_device(ice->pci);
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 47485af..048d99e 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2468,7 +2468,7 @@
pci_write_config_dword(chip->pci, 0x4c, val);
}
/* --- */
- synchronize_irq(chip->irq);
+
__hw_end:
if (chip->irq >= 0)
free_irq(chip->irq, chip);
@@ -2517,7 +2517,6 @@
chip->sdm_saved = igetbyte(chip, ICHREG(SDM));
if (chip->irq >= 0) {
- synchronize_irq(chip->irq);
free_irq(chip->irq, chip);
chip->irq = -1;
}
diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index cadda8d..15db810 100644
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -986,7 +986,8 @@
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
/* --- */
- synchronize_irq(chip->irq);
+ if (chip->irq >= 0)
+ synchronize_irq(chip->irq);
__hw_end:
if (chip->bdbars.area)
snd_dma_free_pages(&chip->bdbars);
diff --git a/sound/pci/maestro3.c b/sound/pci/maestro3.c
index a753dae..a536c59 100644
--- a/sound/pci/maestro3.c
+++ b/sound/pci/maestro3.c
@@ -2542,10 +2542,8 @@
vfree(chip->suspend_mem);
#endif
- if (chip->irq >= 0) {
- synchronize_irq(chip->irq);
+ if (chip->irq >= 0)
free_irq(chip->irq, chip);
- }
if (chip->iobase)
pci_release_regions(chip->pci);
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index f84f6a12..897697d 100644
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -410,10 +410,8 @@
oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
spin_unlock_irq(&chip->reg_lock);
- if (chip->irq >= 0) {
+ if (chip->irq >= 0)
free_irq(chip->irq, chip);
- synchronize_irq(chip->irq);
- }
flush_scheduled_work();
chip->model->cleanup(chip);
mutex_destroy(&chip->mutex);
diff --git a/sound/pci/sis7019.c b/sound/pci/sis7019.c
index 742f118..df2007e 100644
--- a/sound/pci/sis7019.c
+++ b/sound/pci/sis7019.c
@@ -1194,7 +1194,6 @@
/* snd_pcm_suspend_all() stopped all channels, so we're quiescent.
*/
if (sis->irq >= 0) {
- synchronize_irq(sis->irq);
free_irq(sis->irq, sis);
sis->irq = -1;
}
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c
index a756be6..b585cc3 100644
--- a/sound/pci/via82xx.c
+++ b/sound/pci/via82xx.c
@@ -2236,7 +2236,7 @@
/* disable interrupts */
for (i = 0; i < chip->num_devs; i++)
snd_via82xx_channel_reset(chip, &chip->devs[i]);
- synchronize_irq(chip->irq);
+
if (chip->irq >= 0)
free_irq(chip->irq, chip);
__end_hw:
diff --git a/sound/pci/via82xx_modem.c b/sound/pci/via82xx_modem.c
index f5df1c7..31f64ee 100644
--- a/sound/pci/via82xx_modem.c
+++ b/sound/pci/via82xx_modem.c
@@ -1075,7 +1075,7 @@
/* disable interrupts */
for (i = 0; i < chip->num_devs; i++)
snd_via82xx_channel_reset(chip, &chip->devs[i]);
- synchronize_irq(chip->irq);
+
__end_hw:
if (chip->irq >= 0)
free_irq(chip->irq, chip);