openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ALSA: intel8x0m: Register irq handler after register initializations 

The interrupt handler has to be acquired after the other resource
initialization when allocated with IRQF_SHARED.  Otherwise it's
triggered before the resource gets ready, and may lead to unpleasant
behavior.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2018-08-28 16:39:10 +02:00
parent 5b03006d5c
commit 7064f376d4
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
sound/pci/intel8x0m.c
View File

@ -1171,16 +1171,6 @@ static int snd_intel8x0m_create(struct snd_card *card,
}
port_inited:
if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
snd_intel8x0m_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;
pci_set_master(pci);
synchronize_irq(chip->irq);
/* initialize offsets */
chip->bdbars_count = 2;
tbl = intel_regs;
@ -1224,11 +1214,21 @@ static int snd_intel8x0m_create(struct snd_card *card,
chip->int_sta_reg = ICH_REG_GLOB_STA;
chip->int_sta_mask = int_sta_masks;
pci_set_master(pci);
if ((err = snd_intel8x0m_chip_init(chip, 1)) < 0) {
snd_intel8x0m_free(chip);
return err;
}
if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
snd_intel8x0m_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_intel8x0m_free(chip);
return err;