linux-kernel - [PATCH 4.18 094/123] s390/purgatory: Add missing FORCE to Makefile targets

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Message-Id: <20180903165723.499710016@linuxfoundation.org>
Date:   Mon,  3 Sep 2018 18:57:18 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Philipp Rudo <prudo@...ux.ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: [PATCH 4.18 094/123] s390/purgatory: Add missing FORCE to Makefile targets

4.18-stable review patch.  If anyone has any objections, please let me know.

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

From: Philipp Rudo <prudo@...ux.ibm.com>

commit c315e69308c739a43c4ebc539bedbc1ac8d79854 upstream.

Without FORCE make does not detect changes only made to the command line
options. So object files might not be re-built even when they should be.
Fix this by adding FORCE where it is missing.

Fixes: 840798a1f5299 ("s390/kexec_file: Add purgatory")
Cc: <stable@...r.kernel.org> # 4.17
Signed-off-by: Philipp Rudo <prudo@...ux.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@...ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@...ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/s390/purgatory/Makefile |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/arch/s390/purgatory/Makefile
+++ b/arch/s390/purgatory/Makefile
@@ -7,13 +7,13 @@ purgatory-y := head.o purgatory.o string
 targets += $(purgatory-y) purgatory.ro kexec-purgatory.c
 PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
 
-$(obj)/sha256.o: $(srctree)/lib/sha256.c
+$(obj)/sha256.o: $(srctree)/lib/sha256.c FORCE
 	$(call if_changed_rule,cc_o_c)
 
-$(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S
+$(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE
 	$(call if_changed_rule,as_o_S)
 
-$(obj)/string.o: $(srctree)/arch/s390/lib/string.c
+$(obj)/string.o: $(srctree)/arch/s390/lib/string.c FORCE
 	$(call if_changed_rule,cc_o_c)
 
 LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib