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ALSA: hda - Disable MSI for Nvidia controller

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commit 80c43ed724 upstream.

Judging from the member of enable_msi white-list, Nvidia controller
seems to cause troubles with MSI enabled, e.g. boot hang up or other
serious issue may come up.  It's safer to disable MSI as default for
Nvidia controllers again for now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Takashi Iwai
2010-03-15 15:51:53 +01:00
committed by Greg Kroah-Hartman
parent fbaa3a9c96
commit 013e2704f2
1 changed files with 7 additions and 0 deletions
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7
sound/pci/hda/hda_intel.c
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@@ -2335,6 +2335,13 @@ static void __devinit check_msi(struct azx *chip)
"hda_intel: msi for device %04x:%04x set to %d\n",
q->subvendor, q->subdevice, q->value);
chip->msi = q->value;
return;
}
/* NVidia chipsets seem to cause troubles with MSI */
if (chip->driver_type == AZX_DRIVER_NVIDIA) {
printk(KERN_INFO "hda_intel: Disable MSI for Nvidia chipset\n");
chip->msi = 0;
}
}