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| author | Colin Ian King <colin.king@canonical.com> | 2012-11-27 15:09:40 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-01-15 00:23:42 +0100 |
| commit | 9e16721498b0c3d3ebfa0b503c63d35c0a4c0642 (patch) | |
| tree | f4ca526220308c5c199904947ee9875294ae8f5f /drivers/pci/pcie/aspm.c | |
| parent | Merge branch 'pci/yijing-hotplug-workqueues' into for-linus (diff) | |
| download | linux-9e16721498b0c3d3ebfa0b503c63d35c0a4c0642.tar.xz linux-9e16721498b0c3d3ebfa0b503c63d35c0a4c0642.zip | |
PCI: Allow pcie_aspm=force even when FADT indicates it is unsupported
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 3c076351c4 ("PCI: Rework ASPM
disable code")
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.
Reference: http://bugs.launchpad.net/bugs/962038
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org
Diffstat (limited to 'drivers/pci/pcie/aspm.c')
| -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 b52630b8eada..8474b6a4fc9b 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -771,6 +771,9 @@ 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 */ |