diff options
| author | Leonard Crestez <leonard.crestez@nxp.com> | 2018-03-13 22:17:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-08 14:26:32 +0200 |
| commit | b5a8883909984b60ab9274ef52e364051bd6177a (patch) | |
| tree | 43ee5d586ce42f6d73163a7947090307264f4378 /arch/arm/crypto | |
| parent | ee54953ecd47a7d699cd132999efd6db3965a794 (diff) | |
crypto: arm,arm64 - Fix random regeneration of S_shipped
commit 6aaf49b495b446ff6eec0ac983f781ca0dc56a73 upstream.
The decision to rebuild .S_shipped is made based on the relative
timestamps of .S_shipped and .pl files but git makes this essentially
random. This means that the perl script might run anyway (usually at
most once per checkout), defeating the whole purpose of _shipped.
Fix by skipping the rule unless explicit make variables are provided:
REGENERATE_ARM_CRYPTO or REGENERATE_ARM64_CRYPTO.
This can produce nasty occasional build failures downstream, for example
for toolchains with broken perl. The solution is minimally intrusive to
make it easier to push into stable.
Another report on a similar issue here: https://lkml.org/lkml/2018/3/8/1379
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm/crypto')
| -rw-r--r-- | arch/arm/crypto/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/crypto/Makefile b/arch/arm/crypto/Makefile index 30ef8e291271..c9919c2b7ad1 100644 --- a/arch/arm/crypto/Makefile +++ b/arch/arm/crypto/Makefile @@ -54,6 +54,7 @@ crct10dif-arm-ce-y := crct10dif-ce-core.o crct10dif-ce-glue.o crc32-arm-ce-y:= crc32-ce-core.o crc32-ce-glue.o chacha20-neon-y := chacha20-neon-core.o chacha20-neon-glue.o +ifdef REGENERATE_ARM_CRYPTO quiet_cmd_perl = PERL $@ cmd_perl = $(PERL) $(<) > $(@) @@ -62,5 +63,6 @@ $(src)/sha256-core.S_shipped: $(src)/sha256-armv4.pl $(src)/sha512-core.S_shipped: $(src)/sha512-armv4.pl $(call cmd,perl) +endif .PRECIOUS: $(obj)/sha256-core.S $(obj)/sha512-core.S |