From 6ca05d7182452b47a2e25a218254f3eebb0314fa Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 15 Mar 2010 15:51:53 +0100 Subject: [PATCH] ALSA: hda - Disable MSI for Nvidia controller 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 Signed-off-by: Greg Kroah-Hartman --- sound/pci/hda/hda_intel.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 16df726ba7a5..9b059d9d4ab5 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2374,6 +2374,13 @@ 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; } } -- 2.39.2