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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 <>

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: <> # 4.17
Signed-off-by: Philipp Rudo <>
Acked-by: Heiko Carstens <>
Signed-off-by: Martin Schwidefsky <>
Signed-off-by: Greg Kroah-Hartman <>

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) 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) := -e purgatory_start -r --no-undefined -nostdlib

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