Merge branch 'master' into for-next

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index cb2fd01edda..cb23aa2ebf9 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -47,6 +47,7 @@
 #include <linux/pci_hotplug.h>
 #include <linux/pci-acpi.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 
 #include "../pci.h"
 #include "acpiphp.h"
@@ -749,6 +750,24 @@ static int acpiphp_bus_trim(acpi_handle handle)
 	return retval;
 }
 
+static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)
+{
+	struct acpiphp_func *func;
+	union acpi_object params[2];
+	struct acpi_object_list arg_list;
+
+	list_for_each_entry(func, &slot->funcs, sibling) {
+		arg_list.count = 2;
+		arg_list.pointer = params;
+		params[0].type = ACPI_TYPE_INTEGER;
+		params[0].integer.value = ACPI_ADR_SPACE_PCI_CONFIG;
+		params[1].type = ACPI_TYPE_INTEGER;
+		params[1].integer.value = 1;
+		/* _REG is optional, we don't care about if there is failure */
+		acpi_evaluate_object(func->handle, "_REG", &arg_list, NULL);
+	}
+}
+
 /**
  * enable_device - enable, configure a slot
  * @slot: slot to be enabled
@@ -805,6 +824,7 @@ static int __ref enable_device(struct acpiphp_slot *slot)
 	pci_bus_assign_resources(bus);
 	acpiphp_sanitize_bus(bus);
 	acpiphp_set_hpp_values(bus);
+	acpiphp_set_acpi_region(slot);
 	pci_enable_bridges(bus);
 	pci_bus_add_devices(bus);