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Commit 4d8e22e0 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda - Add a white-list for MSI option 

Created a white-list to enable MSI since some devices require MSI
explicitly due to BIOS/ACPI problems.  Simply using a quirk list.
As the first case, take HP Compaq CQ40.

Reference: Novell bnc#529971
	https://bugzilla.novell.com/show_bug.cgi?id=529971



Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent b59bdf3b

sound/pci/hda/hda_intel.c

+25 −1
Original line number Diff line number Diff line
@@ -2299,6 +2299,30 @@ static void __devinit check_probe_mask(struct azx *chip, int dev) 
	}

}



/*

 * white-list for enable_msi

 */

static struct snd_pci_quirk msi_white_list[] __devinitdata = {

	SND_PCI_QUIRK(0x103c, 0x3607, "HP Compa CQ40", 1),

	{}

};



static void __devinit check_msi(struct azx *chip)

{

	const struct snd_pci_quirk *q;



	chip->msi = enable_msi;

	if (chip->msi)

		return;

	q = snd_pci_quirk_lookup(chip->pci, msi_white_list);

	if (q) {

		printk(KERN_INFO

		       "hda_intel: msi for device %04x:%04x set to %d\n",

		       q->subvendor, q->subdevice, q->value);

		chip->msi = q->value;

	}

}





/*

 * constructor
@@ -2333,7 +2357,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci, 
	chip->pci = pci;

	chip->irq = -1;

	chip->driver_type = driver_type;

	chip->msi = enable_msi;

	check_msi(chip);

	chip->dev_index = dev;

	INIT_WORK(&chip->irq_pending_work, azx_irq_pending_work);