3 files changed, 28 insertions, 11 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index b0972c4ce81c..d9099b15b472 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -44,6 +44,20 @@
 #include <acpi/acpi_numa.h>
 #include <asm/acpi.h>
 
+static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
+{
+        return adev ? adev->handle : NULL;
+}
+
+#define ACPI_COMPANION(dev)             ((dev)->acpi_node.companion)
+#define ACPI_COMPANION_SET(dev, adev)   ACPI_COMPANION(dev) = (adev)
+#define ACPI_HANDLE(dev)                acpi_device_handle(ACPI_COMPANION(dev))
+
+static inline const char *acpi_dev_name(struct acpi_device *adev)
+{
+        return dev_name(&adev->dev);
+}
+
 enum acpi_irq_model_id {
         ACPI_IRQ_MODEL_PIC = 0,
         ACPI_IRQ_MODEL_IOAPIC,
@@ -401,6 +415,15 @@ static inline bool acpi_driver_match_device(struct device *dev,
 
 #define acpi_disabled 1
 
+#define ACPI_COMPANION(dev)             (NULL)
+#define ACPI_COMPANION_SET(dev, adev)   do { } while (0)
+#define ACPI_HANDLE(dev)                (NULL)
+
+static inline const char *acpi_dev_name(struct acpi_device *adev)
+{
+        return NULL;
+}
+
 static inline void acpi_early_init(void) { }
 
 static inline int early_acpi_boot_init(void)
diff --git a/include/linux/device.h b/include/linux/device.h
index b025925df7f7..952b01033c32 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -644,9 +644,11 @@ struct device_dma_parameters {
         unsigned long segment_boundary_mask;
 };
 
+struct acpi_device;
+
 struct acpi_dev_node {
 #ifdef CONFIG_ACPI
-        void    *handle;
+        struct acpi_device *companion;
 #endif
 };
 
@@ -790,14 +792,6 @@ static inline struct device *kobj_to_dev(struct kobject *kobj)
         return container_of(kobj, struct device, kobj);
 }
 
-#ifdef CONFIG_ACPI
-#define ACPI_HANDLE(dev)        ((dev)->acpi_node.handle)
-#define ACPI_HANDLE_SET(dev, _handle_)  (dev)->acpi_node.handle = (_handle_)
-#else
-#define ACPI_HANDLE(dev)        (NULL)
-#define ACPI_HANDLE_SET(dev, _handle_)  do { } while (0)
-#endif
-
 /* Get the wakeup routines, which depend on struct device */
 #include <linux/pm_wakeup.h>
 
diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h
index d006f0ca60f4..5a462c4e5009 100644
--- a/include/linux/pci-acpi.h
+++ b/include/linux/pci-acpi.h
@@ -27,7 +27,7 @@ static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
         while (!pci_is_root_bus(pbus))
                 pbus = pbus->parent;
 
-        return DEVICE_ACPI_HANDLE(pbus->bridge);
+        return ACPI_HANDLE(pbus->bridge);
 }
 
 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
@@ -39,7 +39,7 @@ static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
         else
                 dev = &pbus->self->dev;
 
-        return DEVICE_ACPI_HANDLE(dev);
+        return ACPI_HANDLE(dev);
 }
 
 void acpi_pci_add_bus(struct pci_bus *bus);