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PCI: Do not run NVidia quirks related to MSI with MSI disabled 

There is no reason to run NVidia-specific quirks related to HT MSI
mappings with MSI disabled via pci=nomsi, so make
__nv_msi_ht_cap_quirk() return immediately in that case.

This allows at least one machine to boot 100% of the time with
pci=nomsi (it still doesn't boot reliably without that).

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16443 .

Cc: stable@kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Rafael J. Wysocki 2010-07-23 22:19:55 +02:00 committed by Jesse Barnes
parent 1f7979ac53
commit 3d2a531804
1 changed files with 3 additions and 0 deletions
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3
drivers/pci/quirks.c
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@ -2421,6 +2421,9 @@ static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
int pos;
int found;
if (!pci_msi_enabled())
return;
/* check if there is HT MSI cap or enabled on this device */
found = ht_check_msi_mapping(dev);