ACPICA: Fix acpi_evaluate_object_typed()

Commit 2d2a9543 (ACPICA: Update two error messages to emit
control method name) causes acpi_evaluate_object_typed() to fail
if its pathname argument is NULL, but some callers of that function
in the kernel, particularly acpi_nondev_subnode_data_ok(), pass
NULL as pathname to it and expect it to work.

For this reason, make acpi_evaluate_object_typed() check if its
pathname argument is NULL and fall back to using the pathname of
its handle argument if that is the case.
Reported-by: Sakari Ailus <sakari.ailus@intel.com>
Tested-by: Yang, Hyungwoo <hyungwoo.yang@intel.com>
Fixes: 2d2a9543 (ACPICA: Update two error messages to emit control method name)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/nsxfeval.c

@@ -100,10 +100,14 @@ acpi_evaluate_object_typed(acpi_handle handle,
 		free_buffer_on_error = TRUE;
 	}
 
+	if (pathname) {
 		status = acpi_get_handle(handle, pathname, &target_handle);
 		if (ACPI_FAILURE(status)) {
 			return_ACPI_STATUS(status);
 		}
+	} else {
+		target_handle = handle;
+	}
 
 	full_pathname = acpi_ns_get_external_pathname(target_handle);
 	if (!full_pathname) {