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PCI/ASPM: Don't touch ASPM if forcibly disabled
Don't allocate and track PCIe ASPM state when "pcie_aspm=off" is specified on the kernel command line. Based-on-patch-from: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: David Bulkow <david.bulkow@stratus.com> Acked-by: Myron Stowe <myron.stowe@redhat.com>
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@ -556,6 +556,9 @@ void pcie_aspm_init_link_state(struct pci_dev *pdev)
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struct pcie_link_state *link;
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int blacklist = !!pcie_aspm_sanity_check(pdev);
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if (!aspm_support_enabled)
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return;
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if (!pci_is_pcie(pdev) || pdev->link_state)
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return;
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if (pci_pcie_type(pdev) != PCI_EXP_TYPE_ROOT_PORT &&
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