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authorMatthew Garrett <mjg59@coreos.com>2015-04-07 21:07:00 +0300
committerBjorn Helgaas <bhelgaas@google.com>2015-04-09 22:20:11 +0300
commit387d37577fdd05e9472c20885464c2a53b3c945f (patch)
tree5658630a603c2fa28fe5dc54502a0ac4c3bebe43 /include/linux/pci-aspm.h
parent37a9c502c0af013aaae094556830100c2bb133ac (diff)
downloadlinux-387d37577fdd05e9472c20885464c2a53b3c945f.tar.xz
PCI: Don't clear ASPM bits when the FADT declares it's unsupported
Communications with a hardware vendor confirm that the expected behaviour on systems that set the FADT ASPM disable bit but which still grant full PCIe control is for the OS to leave any BIOS configuration intact and refuse to touch the ASPM bits. This mimics the behaviour of Windows. Signed-off-by: Matthew Garrett <mjg59@coreos.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/linux/pci-aspm.h')
-rw-r--r--include/linux/pci-aspm.h4
1 files changed, 0 insertions, 4 deletions
diff --git a/include/linux/pci-aspm.h b/include/linux/pci-aspm.h
index 8af4610c2e41..207c561fb40e 100644
--- a/include/linux/pci-aspm.h
+++ b/include/linux/pci-aspm.h
@@ -29,7 +29,6 @@ void pcie_aspm_pm_state_change(struct pci_dev *pdev);
void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
void pci_disable_link_state(struct pci_dev *pdev, int state);
void pci_disable_link_state_locked(struct pci_dev *pdev, int state);
-void pcie_clear_aspm(struct pci_bus *bus);
void pcie_no_aspm(void);
#else
static inline void pcie_aspm_init_link_state(struct pci_dev *pdev)
@@ -47,9 +46,6 @@ static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev)
static inline void pci_disable_link_state(struct pci_dev *pdev, int state)
{
}
-static inline void pcie_clear_aspm(struct pci_bus *bus)
-{
-}
static inline void pcie_no_aspm(void)
{
}