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authorMatthew Garrett <mjg@redhat.com>2012-03-06 13:41:49 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-03-19 09:02:19 -0700
commitf043ddb60c84ea64a23b755004572afe922e653c (patch)
treef7e20692fe9f029fa18774ba90d31c0a30f46870
parentc042d55ecd82863d6d159e24187c3a1ea45ed669 (diff)
PCI: ignore pre-1.1 ASPM quirking when ASPM is disabled
commit 4949be16822e92a18ea0cc1616319926628092ee upstream. Right now we won't touch ASPM state if ASPM is disabled, except in the case where we find a device that appears to be too old to reliably support ASPM. Right now we'll clear it in that case, which is almost certainly the wrong thing to do. The easiest way around this is just to disable the blacklisting when ASPM is disabled. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/pci/pcie/aspm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 1cfbf228fbb..24f049e7395 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -500,6 +500,9 @@ static int pcie_aspm_sanity_check(struct pci_dev *pdev)
int pos;
u32 reg32;
+ if (aspm_disabled)
+ return 0;
+
/*
* Some functions in a slot might not all be PCIe functions,
* very strange. Disable ASPM for the whole slot