diff options
Diffstat (limited to 'PCI-Work-around-poweroff-suspend-to-RAM-issue-on-Mac.patch')
| -rw-r--r-- | PCI-Work-around-poweroff-suspend-to-RAM-issue-on-Mac.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/PCI-Work-around-poweroff-suspend-to-RAM-issue-on-Mac.patch b/PCI-Work-around-poweroff-suspend-to-RAM-issue-on-Mac.patch new file mode 100644 index 000000000000..2a5cb6475aea --- /dev/null +++ b/PCI-Work-around-poweroff-suspend-to-RAM-issue-on-Mac.patch @@ -0,0 +1,40 @@ +diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c +index 6d52b94f4bb9..20fa7c84109d 100644 +--- a/arch/x86/pci/fixup.c ++++ b/arch/x86/pci/fixup.c +@@ -571,3 +571,35 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2fc0, pci_invalid_bar); + DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6f60, pci_invalid_bar); + DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fa0, pci_invalid_bar); + DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fc0, pci_invalid_bar); ++ ++/* ++ * 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); |