diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2016-02-26 18:15:11 +0300 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-04-18 15:49:26 +0300 |
| commit | 5f59838bb3a068332e06dff3d20ff4b97c8902d5 (patch) | |
| tree | bc8e2289468eb3663604b520c97cd9e751af4c80 /arch/x86 | |
| parent | 3629c42c9918a763d75786479f384a00324ec4f0 (diff) | |
| download | linux-5f59838bb3a068332e06dff3d20ff4b97c8902d5.tar.xz | |
x86/PCI: Mark Broadwell-EP Home Agent & PCU as having non-compliant BARs
[ Upstream commit b894157145e4ac7598d7062bc93320898a5e059e ]
The Home Agent and PCU PCI devices in Broadwell-EP have a non-BAR register
where a BAR should be. We don't know what the side effects of sizing the
"BAR" would be, and we don't know what address space the "BAR" might appear
to describe.
Mark these devices as having non-compliant BARs so the PCI core doesn't
touch them.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Andi Kleen <ak@linux.intel.com>
CC: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/pci/fixup.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c index 9a2b7101ae8a..f16af96c60a2 100644 --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -553,3 +553,10 @@ static void twinhead_reserve_killing_zone(struct pci_dev *dev) } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x27B9, twinhead_reserve_killing_zone); + +static void pci_bdwep_bar(struct pci_dev *dev) +{ + dev->non_compliant_bars = 1; +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fa0, pci_bdwep_bar); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fc0, pci_bdwep_bar); |