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Subject[PATCH 4.18 101/228] MIPS: boot: fix build rule of vmlinux.its.S
Date
4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Masahiro Yamada <yamada.masahiro@socionext.com>

[ Upstream commit 67e09db507db3e1642ddce512a4313d20addd6e5 ]

As Documentation/kbuild/makefile.txt says, it is a typical mistake
to forget the FORCE prerequisite for the rule invoked by if_changed.

Add the FORCE to the prerequisite, but it must be filtered-out from
the files passed to the 'cat' command. Because this rule generates
.vmlinux.its.S.cmd, vmlinux.its.S must be specified as targets so
that the .cmd file is included.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Patchwork: https://patchwork.linux-mips.org/patch/19097/
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/boot/Makefile | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

--- a/arch/mips/boot/Makefile
+++ b/arch/mips/boot/Makefile
@@ -118,10 +118,12 @@ ifeq ($(ADDR_BITS),64)
itb_addr_cells = 2
endif

+targets += vmlinux.its.S
+
quiet_cmd_its_cat = CAT $@
- cmd_its_cat = cat $^ >$@
+ cmd_its_cat = cat $(filter-out $(PHONY), $^) >$@

-$(obj)/vmlinux.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS))
+$(obj)/vmlinux.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE
$(call if_changed,its_cat)

quiet_cmd_cpp_its_S = ITS $@

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