[040/156] ALSA: hda - Disable MSI for Nvidia controller
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From: Greg KH on 30 Mar 2010 19:40 2.6.33-stable review patch. If anyone has any objections, please let us know. ------------------ From: Takashi Iwai <tiwai(a)suse.de> commit 80c43ed724797627d8f86855248c497a6161a214 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(a)suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de> --- sound/pci/hda/hda_intel.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2374,6 +2374,13 @@ static void __devinit check_msi(struct a "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; } } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |