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Merge branch 'pci/resource' into next

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* pci/resource:
  PCI: Work around poweroff & suspend-to-RAM issue on Macbook Pro 11
  PCI: Do not disregard parent resources starting at 0x0

Conflicts:
arch/x86/pci/fixup.c
This commit is contained in:
Bjorn Helgaas 2017-07-02 18:49:49 -05:00
commit 8cd9385034
2 changed files with 33 additions and 1 deletions
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32
arch/x86/pci/fixup.c
View File

@ -586,3 +586,35 @@ static void pci_fixup_amd_ehci_pme(struct pci_dev *dev)
>> PCI_PM_CAP_PME_SHIFT);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x7808, pci_fixup_amd_ehci_pme);
/*
* Apple MacBook Pro: Avoid [mem 0x7fa00000-0x7fbfffff]
*
* Using the [mem 0x7fa00000-0x7fbfffff] region, e.g., by assigning it to
* the 00:1c.0 Root Port, causes a conflict with [io 0x1804], which is used
* for soft poweroff and suspend-to-RAM.
*
* As far as we know, this is related to the address space, not to the Root
* Port itself. Attaching the quirk to the Root Port is a convenience, but
* it could probably also be a standalone DMI quirk.
*
* https://bugzilla.kernel.org/show_bug.cgi?id=103211
*/
static void quirk_apple_mbp_poweroff(struct pci_dev *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
if ((!dmi_match(DMI_PRODUCT_NAME, "MacBookPro11,4") &&
!dmi_match(DMI_PRODUCT_NAME, "MacBookPro11,5")) ||
pdev->bus->number != 0 || pdev->devfn != PCI_DEVFN(0x1c, 0))
return;
res = request_mem_region(0x7fa00000, 0x200000,
"MacBook Pro poweroff workaround");
if (res)
dev_info(dev, "claimed %s %pR\n", res->name, res);
else
dev_info(dev, "can't work around MacBook Pro poweroff issue\n");
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8c10, quirk_apple_mbp_poweroff);

2
drivers/pci/pci.c
View File

@ -455,7 +455,7 @@ struct resource *pci_find_parent_resource(const struct pci_dev *dev,
pci_bus_for_each_resource(bus, r, i) {
if (!r)
continue;
if (res->start && resource_contains(r, res)) {
if (resource_contains(r, res)) {
/*
* If the window is prefetchable but the BAR is