[PATCH] lib/crypto: ensure generated *.S files are removed on make clean

[Tal Zussman]

make clean does not check the kernel config when removing files. As
such, additions to clean-files under CONFIG_ARM or CONFIG_ARM64 are not
evaluated. For example, when building on arm64, this means that
lib/crypto/arm64/sha{256,512}-core.S are left over after make clean.

Set clean-files unconditionally to ensure that make clean removes these
files.

Fixes: e96cb9507f2d ("lib/crypto: sha256: Consolidate into single module")
Fixes: 24c91b62ac50 ("lib/crypto: arm/sha512: Migrate optimized SHA-512 code to library")
Fixes: 60e3f1e9b7a5 ("lib/crypto: arm64/sha512: Migrate optimized SHA-512 code to library")
Signed-off-by: Tal Zussman <tz2294@xxxxxxxxxxxx>
---
An alternative approach is to rename the generated files to *.s and
remove the clean-files lines, as make clean removes *.s files
automatically. However, this would require explicitly defining the
corresponding *.o rules.
---
 lib/crypto/Makefile | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/crypto/Makefile b/lib/crypto/Makefile
index e4151be2ebd4..44f6a1fdc808 100644
--- a/lib/crypto/Makefile
+++ b/lib/crypto/Makefile
@@ -100,7 +100,6 @@ ifeq ($(CONFIG_ARM),y)
 libsha256-y += arm/sha256-ce.o arm/sha256-core.o
 $(obj)/arm/sha256-core.S: $(src)/arm/sha256-armv4.pl
 	$(call cmd,perlasm)
-clean-files += arm/sha256-core.S
 AFLAGS_arm/sha256-core.o += $(aflags-thumb2-y)
 endif
 
@@ -108,7 +107,6 @@ ifeq ($(CONFIG_ARM64),y)
 libsha256-y += arm64/sha256-core.o
 $(obj)/arm64/sha256-core.S: $(src)/arm64/sha2-armv8.pl
 	$(call cmd,perlasm_with_args)
-clean-files += arm64/sha256-core.S
 libsha256-$(CONFIG_KERNEL_MODE_NEON) += arm64/sha256-ce.o
 endif
 
@@ -132,7 +130,6 @@ ifeq ($(CONFIG_ARM),y)
 libsha512-y += arm/sha512-core.o
 $(obj)/arm/sha512-core.S: $(src)/arm/sha512-armv4.pl
 	$(call cmd,perlasm)
-clean-files += arm/sha512-core.S
 AFLAGS_arm/sha512-core.o += $(aflags-thumb2-y)
 endif
 
@@ -140,7 +137,6 @@ ifeq ($(CONFIG_ARM64),y)
 libsha512-y += arm64/sha512-core.o
 $(obj)/arm64/sha512-core.S: $(src)/arm64/sha2-armv8.pl
 	$(call cmd,perlasm_with_args)
-clean-files += arm64/sha512-core.S
 libsha512-$(CONFIG_KERNEL_MODE_NEON) += arm64/sha512-ce-core.o
 endif
 
@@ -167,3 +163,7 @@ obj-$(CONFIG_PPC) += powerpc/
 obj-$(CONFIG_RISCV) += riscv/
 obj-$(CONFIG_S390) += s390/
 obj-$(CONFIG_X86) += x86/
+
+# clean-files must be defined unconditionally
+clean-files += arm/sha256-core.S arm/sha256-core.S
+clean-files += arm64/sha512-core.S arm64/sha512-core.S

---
base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
change-id: 20250813-crypto_clean-6b4d483e40fb

Best regards,
-- 
Tal Zussman <tz2294@xxxxxxxxxxxx>