linux-hardening - [PATCH] sparc: Add missing "FORCE" target when using if

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Message-Id: <20210923215418.3936726-1-keescook@chromium.org>
Date:   Thu, 23 Sep 2021 14:54:18 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        sparclinux@...r.kernel.org, Nicolas Schier <n.schier@....de>,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: [PATCH] sparc: Add missing "FORCE" target when using if_changed

Fix observed warning:

    /builds/linux/arch/sparc/boot/Makefile:35: FORCE prerequisite is missing

Fixes: e1f86d7b4b2a5213 ("kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and filechk")
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Masahiro Yamada <masahiroy@...nel.org>
Cc: sparclinux@...r.kernel.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
I'm not sure if this should go via sparc or via kbuild. :)
---
 arch/sparc/boot/Makefile | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/sparc/boot/Makefile b/arch/sparc/boot/Makefile
index 849236d4eca4..45e5c76d449e 100644
--- a/arch/sparc/boot/Makefile
+++ b/arch/sparc/boot/Makefile
@@ -22,7 +22,7 @@ ifeq ($(CONFIG_SPARC64),y)
 
 # Actual linking
 
-$(obj)/zImage: $(obj)/image
+$(obj)/zImage: $(obj)/image FORCE
 	$(call if_changed,gzip)
 	@echo '  kernel: $@ is ready'
 
@@ -31,7 +31,7 @@ $(obj)/vmlinux.aout: vmlinux FORCE
 	@echo '  kernel: $@ is ready'
 else
 
-$(obj)/zImage: $(obj)/image
+$(obj)/zImage: $(obj)/image FORCE
 	$(call if_changed,strip)
 	@echo '  kernel: $@ is ready'
 
@@ -44,7 +44,7 @@ OBJCOPYFLAGS_image.bin := -S -O binary -R .note -R .comment
 $(obj)/image.bin: $(obj)/image FORCE
 	$(call if_changed,objcopy)
 
-$(obj)/image.gz: $(obj)/image.bin
+$(obj)/image.gz: $(obj)/image.bin FORCE
 	$(call if_changed,gzip)
 
 UIMAGE_LOADADDR = $(CONFIG_UBOOT_LOAD_ADDR)
@@ -56,7 +56,7 @@ quiet_cmd_uimage.o = UIMAGE.O $@
                      -r -b binary $@ -o $@.o
 
 targets += uImage
-$(obj)/uImage: $(obj)/image.gz
+$(obj)/uImage: $(obj)/image.gz FORCE
 	$(call if_changed,uimage)
 	$(call if_changed,uimage.o)
 	@echo '  Image $@ is ready'
-- 
2.30.2