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authorAndrew Patterson <andrew.patterson@hp.com>2008-11-10 23:30:55 +0100
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-01-07 20:12:29 +0100
commit3e1b16002af29758b6bc9c38939d43838d9335bc (patch)
tree6782f844e3813355280ad3367c58d90d576901f2 /drivers/acpi/pci_root.c
parentACPI/PCI: PCI extended config _OSC support called when root bridge added (diff)
downloadlinux-3e1b16002af29758b6bc9c38939d43838d9335bc.tar.xz
linux-3e1b16002af29758b6bc9c38939d43838d9335bc.zip
ACPI/PCI: PCIe ASPM _OSC support capabilities called when root bridge added
The _OSC capabilities OSC_ACTIVE_STATE_PWR_SUPPORT and OSC_CLOCK_PWR_CAPABILITY_SUPPORT are set when the root bridge is added with pci_acpi_osc_support(), so we no longer need to do it in the ASPM driver. Also add the function pcie_aspm_enabled, which returns true if pcie_aspm=off is not on the kernel command-line. Signed-off-by: Andrew Patterson <andrew.patterson@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.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 96e68e841539..9fe026b1c9d0 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -347,6 +347,9 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
/* Indicate support for various _OSC capabilities. */
if (pci_ext_cfg_avail(root->bus->self))
flags |= OSC_EXT_PCI_CONFIG_SUPPORT;
+ if (pcie_aspm_enabled())
+ flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
+ OSC_CLOCK_PWR_CAPABILITY_SUPPORT;
if (flags != base_flags)
pci_acpi_osc_support(device->handle, flags);