--- zzzz-none-000/linux-4.9.218/Documentation/kbuild/makefiles.txt	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ax-750/linux-4.9.218/Documentation/kbuild/makefiles.txt	2023-03-29 10:59:05.000000000 +0000
@@ -1170,7 +1170,6 @@
 
 	Example:
 		targets += $(dtb-y)
-		clean-files += *.dtb
 		DTC_FLAGS ?= -p 1024
 
 --- 6.8 Custom kbuild commands