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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Masahiro Yamada <yamada.masahiro@socionext.com>,
        Paul Burton <paul.burton@mips.com>,
        Kees Cook <keescook@chromium.org>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 104/136] MIPS: boot: fix build rule of
 vmlinux.its.S
Thread-Topic: [PATCH AUTOSEL 4.18 104/136] MIPS: boot: fix build rule of
 vmlinux.its.S
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Date:   Mon, 17 Sep 2018 03:01:17 +0000
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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>
---
 arch/mips/boot/Makefile | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/mips/boot/Makefile b/arch/mips/boot/Makefile
index c22da16d67b8..5c7bfa8478e7 100644
--- a/arch/mips/boot/Makefile
+++ b/arch/mips/boot/Makefile
@@ -118,10 +118,12 @@ ifeq ($(ADDR_BITS),64)
 	itb_addr_cells =3D 2
 endif
=20
+targets +=3D vmlinux.its.S
+
 quiet_cmd_its_cat =3D CAT     $@
-      cmd_its_cat =3D cat $^ >$@
+      cmd_its_cat =3D cat $(filter-out $(PHONY), $^) >$@
=20
-$(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)
=20
 quiet_cmd_cpp_its_S =3D ITS     $@
--=20
2.17.1