From 2078f38c8008f5c54d9523ae19af32b9a0c5530e Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 20 Apr 2007 12:30:28 +0200 Subject: [PATCH] [ALSA] intel8x0 - Fix Oops in crash kernel When intel8x0 driver is loaded in the crash kernel, it gets Oops occasionally. This is because the irq handler gets called before the proper hardware initialization. Now defer it after snd_intel8x0_chip_init(). (reference: http://lkml.org/lkml/2007/3/5/252) Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/pci/intel8x0.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c index 7cf2dcb9d8d..202f720b34b 100644 --- a/sound/pci/intel8x0.c +++ b/sound/pci/intel8x0.c @@ -2493,6 +2493,7 @@ static int intel8x0_resume(struct pci_dev *pci) return -EIO; } pci_set_master(pci); + snd_intel8x0_chip_init(chip, 0); if (request_irq(pci->irq, snd_intel8x0_interrupt, IRQF_SHARED, card->shortname, chip)) { printk(KERN_ERR "intel8x0: unable to grab IRQ %d, " @@ -2502,7 +2503,6 @@ static int intel8x0_resume(struct pci_dev *pci) } chip->irq = pci->irq; synchronize_irq(chip->irq); - snd_intel8x0_chip_init(chip, 0); /* re-initialize mixer stuff */ if (chip->device_type == DEVICE_INTEL_ICH4 && !spdif_aclink) { @@ -2862,16 +2862,7 @@ static int __devinit snd_intel8x0_create(struct snd_card *card, ICH_REG_ALI_INTERRUPTSR : ICH_REG_GLOB_STA; chip->int_sta_mask = int_sta_masks; - /* request irq after initializaing int_sta_mask, etc */ - if (request_irq(pci->irq, snd_intel8x0_interrupt, - IRQF_SHARED, card->shortname, chip)) { - snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); - snd_intel8x0_free(chip); - return -EBUSY; - } - chip->irq = pci->irq; pci_set_master(pci); - synchronize_irq(chip->irq); switch(chip->device_type) { case DEVICE_INTEL_ICH4: @@ -2901,6 +2892,15 @@ static int __devinit snd_intel8x0_create(struct snd_card *card, return err; } + /* request irq after initializaing int_sta_mask, etc */ + if (request_irq(pci->irq, snd_intel8x0_interrupt, + IRQF_SHARED, card->shortname, chip)) { + snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); + snd_intel8x0_free(chip); + return -EBUSY; + } + chip->irq = pci->irq; + if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { snd_intel8x0_free(chip); return err; -- 2.20.1