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| author | Joe Lawrence <joe.lawrence@stratus.com> | 2013-01-15 15:31:28 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-02-01 15:28:19 -0700 |
| commit | a26d5ecb3201c11e03663a8f4a7dedc0c5f85c07 (patch) | |
| tree | 22cb78fa3327fb0259175e416881d46f2f50338a /drivers/pci | |
| parent | 84fb913c43475e0d1e061220ef4622e3e82e91d6 (diff) | |
| download | blackbird-op-linux-a26d5ecb3201c11e03663a8f4a7dedc0c5f85c07.tar.gz blackbird-op-linux-a26d5ecb3201c11e03663a8f4a7dedc0c5f85c07.zip | |
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>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index ca44115ca1f1..e8a19772cf52 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -556,6 +556,9 @@ void pcie_aspm_init_link_state(struct pci_dev *pdev) struct pcie_link_state *link; int blacklist = !!pcie_aspm_sanity_check(pdev); + if (!aspm_support_enabled) + return; + if (!pci_is_pcie(pdev) || pdev->link_state) return; if (pci_pcie_type(pdev) != PCI_EXP_TYPE_ROOT_PORT && |
