1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index e6ae603ed1a1..cd4de7e038ea 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -35,6 +35,7 @@
 #include <linux/pci-aspm.h>
 #include <linux/acpi.h>
 #include <linux/slab.h>
+#include <linux/dmi.h>
 #include <acpi/apei.h>  /* for acpi_hest_init() */
 
 #include "internal.h"
@@ -430,6 +431,19 @@ static void negotiate_os_control(struct acpi_pci_root *root, int *no_aspm,
         acpi_handle handle = device->handle;
 
         /*
+         * Apple always return failure on _OSC calls when _OSI("Darwin") has
+         * been called successfully. We know the feature set supported by the
+         * platform, so avoid calling _OSC at all
+         */
+
+        if (dmi_match(DMI_SYS_VENDOR, "Apple Inc.")) {
+                root->osc_control_set = ~OSC_PCI_EXPRESS_PME_CONTROL;
+                decode_osc_control(root, "OS assumes control of",
+                                   root->osc_control_set);
+                return;
+        }
+
+        /*
          * All supported architectures that use ACPI have support for
          * PCI domains, so we indicate this in _OSC support capabilities.
          */