diff options
| author | Shaohua Li <shaohua.li@intel.com> | 2008-07-23 04:32:24 +0200 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-07-28 23:56:09 +0200 |
| commit | 5fde244d39b88625ac578d83e6625138714de031 (patch) | |
| tree | e50762b22a94f7f7990c9dbab699a857da0982eb /drivers/pci/pcie/aspm.c | |
| parent | PCI MSI: Don't disable MSIs if the mask bit isn't supported (diff) | |
| download | linux-5fde244d39b88625ac578d83e6625138714de031.tar.xz linux-5fde244d39b88625ac578d83e6625138714de031.zip | |
PCI: disable ASPM per ACPI FADT setting
The ACPI FADT table includes an ASPM control bit. If the bit is set, do
not enable ASPM since it may indicate that the platform doesn't actually
support the feature.
Tested-by: Jack Howarth <howarth@bromo.msbb.uc.edu>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pcie/aspm.c')
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index f82495583e63..759c51a4e399 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -808,6 +808,11 @@ static int __init pcie_aspm_disable(char *str) __setup("pcie_noaspm", pcie_aspm_disable); +void pcie_no_aspm(void) +{ + aspm_disabled = 1; +} + #ifdef CONFIG_ACPI #include <acpi/acpi_bus.h> #include <linux/pci-acpi.h> |