The ACPI _HPP method was defined before PCIe existed, so its documentation
only mentions PCI. The _HPX Type 0 setting record is essentially identical
to _HPP, but the spec (ACPI rev 5.0, sec 6.2.8.1) says it should be applied
to PCI, PCI-X, and PCIe devices, with settings being ignored if they are
not applicable.
Some platforms with both conventional PCI and PCIe devices provide only
_HPP (not _HPX), so treat _HPP the same way as an _HPX Type 0 record and
apply it to PCIe devices as well as PCI and PCI-X.
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
drivers/pci/probe.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 4b3b29bc7a82..003d112a783d 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1249,15 +1249,8 @@ static void program_hpp_type0(struct pci_dev *dev, struct hpp_type0 *hpp)
{
u16 pci_cmd, pci_bctl;
- if (!hpp) {
- /*
- * Perhaps we *should* use default settings for PCIe, but
- * pciehp didn't, so we won't either.
- */
- if (pci_is_pcie(dev))
- return;
+ if (!hpp)
hpp = &pci_default_type0;
- }
if (hpp->revision > 1) {
dev_warn(&dev->dev,
--
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