From: Colin Ian King <colin.king@xxxxxxxxxxxxx> Right now using pcie_aspm=force will not enable ASPM if the FADT indicates ASPM is unsupported. However, the semantics of force should probably allow for this, especially as they did before the ASPM disable rework with commit 3c076351c4027a56d5005a39a0b518a4ba393ce2 This patch just skips the clearing of any ASPM setup that the firmware has carried out on this bus if pcie_aspm=force is being used. BugLink: https://bugs.launchpad.net/ubuntu/+bug/962038 Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx> --- 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 24f049e..e406429 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -783,6 +783,9 @@ void pcie_clear_aspm(struct pci_bus *bus) { struct pci_dev *child; + if (aspm_force) + return; + /* * Clear any ASPM setup that the firmware has carried out on this bus */ -- 1.7.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
