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| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2010-02-23 18:24:41 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-02-23 18:43:42 +0100 |
| commit | 7bc5e3f2be32ae6fb0c74cd0f707f986b3a01a26 (patch) | |
| tree | 25db7dccd13f5826a91389c25810425ce36ba2d4 /drivers/acpi/pci_root.c | |
| parent | PCI: augment bus resource table with a list (diff) | |
| download | linux-7bc5e3f2be32ae6fb0c74cd0f707f986b3a01a26.tar.xz linux-7bc5e3f2be32ae6fb0c74cd0f707f986b3a01a26.zip | |
x86/PCI: use host bridge _CRS info by default on 2008 and newer machines
The main benefit of using ACPI host bridge window information is that
we can do better resource allocation in systems with multiple host bridges,
e.g., http://bugzilla.kernel.org/show_bug.cgi?id=14183
Sometimes we need _CRS information even if we only have one host bridge,
e.g., https://bugs.launchpad.net/ubuntu/+source/linux/+bug/341681
Most of these systems are relatively new, so this patch turns on
"pci=use_crs" only on machines with a BIOS date of 2008 or newer.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/acpi/pci_root.c')
| -rw-r--r-- | drivers/acpi/pci_root.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 9cd8bedb1e5a..d724736d56c8 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -566,6 +566,7 @@ static int __init acpi_pci_root_init(void) if (acpi_pci_disabled) return 0; + pci_acpi_crs_quirks(); if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0) return -ENODEV; |