driver core / ACPI: Represent ACPI companions using fwnode_handle
Now that we have struct fwnode_handle, we can use that to point to
ACPI companions from struct device objects instead of pointing to
struct acpi_device directly.
There are two benefits from that. First, the somewhat ugly and
hackish struct acpi_dev_node can be dropped and, second, the same
struct fwnode_handle pointer can be used in the future to point
to other (non-ACPI) firmware device node types.
Signed-off-by: Rafael J. Wysocki <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Acked-by: Grant Likely <[email protected]>
diff --git a/include/linux/device.h b/include/linux/device.h
index 0eb8ee2..badef20 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -38,6 +38,7 @@
struct subsys_private;
struct bus_type;
struct device_node;
+struct fwnode_handle;
struct iommu_ops;
struct iommu_group;
@@ -650,14 +651,6 @@
unsigned long segment_boundary_mask;
};
-struct acpi_device;
-
-struct acpi_dev_node {
-#ifdef CONFIG_ACPI
- struct acpi_device *companion;
-#endif
-};
-
/**
* struct device - The basic device structure
* @parent: The device's "parent" device, the device to which it is attached.
@@ -703,7 +696,7 @@
* @cma_area: Contiguous memory area for dma allocations
* @archdata: For arch-specific additions.
* @of_node: Associated device tree node.
- * @acpi_node: Associated ACPI device node.
+ * @fwnode: Associated device node supplied by platform firmware.
* @devt: For creating the sysfs "dev".
* @id: device instance
* @devres_lock: Spinlock to protect the resource of the device.
@@ -779,7 +772,7 @@
struct dev_archdata archdata;
struct device_node *of_node; /* associated device tree node */
- struct acpi_dev_node acpi_node; /* associated ACPI device node */
+ struct fwnode_handle *fwnode; /* firmware device node */
dev_t devt; /* dev_t, creates the sysfs "dev" */
u32 id; /* device instance */
