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ACPI/PCI: PCIe ASPM _OSC support capabilities called when root bridge added

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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 <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>
This commit is contained in:
Andrew Patterson 2008-11-10 15:30:55 -07:00 • committed by Jesse Barnes
commit 3e1b16002a
3 changed files with 21 additions and 18 deletions
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3
drivers/acpi/pci_root.c
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@ -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);