ACPICA: Fix compiler warnings for casting issues (only some compilers)

Fixes compiler warnings from GCC 4.2 and perhaps other compilers.
Jung-uk Kim <jkim@FreeBSD.org>

Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/exdump.c

@@ -338,6 +338,7 @@ acpi_ex_dump_object(union acpi_operand_object *obj_desc,
 {
 	u8 *target;
 	char *name;
+	const char *reference_name;
 	u8 count;
 
 	if (!info) {
@@ -426,10 +427,9 @@ acpi_ex_dump_object(union acpi_operand_object *obj_desc,
 
 		case ACPI_EXD_REFERENCE:
 
+			reference_name = acpi_ut_get_reference_name(obj_desc);
 			acpi_ex_out_string("Class Name",
-					   ACPI_CAST_PTR(char,
-							 acpi_ut_get_reference_name
-							 (obj_desc)));
+					   ACPI_CAST_PTR(char, reference_name));
 			acpi_ex_dump_reference_obj(obj_desc);
 			break;
 

drivers/acpi/acpica/nsxfname.c

@@ -158,6 +158,7 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
 {
 	acpi_status status;
 	struct acpi_namespace_node *node;
+	char *node_name;
 
 	/* Parameter validation */
 
@@ -202,7 +203,8 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
 
 	/* Just copy the ACPI name from the Node and zero terminate it */
 
-	ACPI_MOVE_NAME(buffer->pointer, acpi_ut_get_node_name(node));
+	node_name = acpi_ut_get_node_name(node);
+	ACPI_MOVE_NAME(buffer->pointer, node_name);
 	((char *)buffer->pointer)[ACPI_NAME_SIZE] = 0;
 	status = AE_OK;