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crypto: arm64/sha256 - fix build when CONFIG_PREEMPT_VOLUNTARY=y

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Fix the build of sha256-ce.S when CONFIG_PREEMPT_VOLUNTARY=y by passing
the correct label to the cond_yield macro.  Also adjust the code to
execute only one branch instruction when CONFIG_PREEMPT_VOLUNTARY=n.

Fixes: 6e36be511d ("crypto: arm64/sha256 - implement library instead of shash")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505071811.yYpLUbav-lkp@intel.com/
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2025-05-07 10:09:01 -07:00 committed by Herbert Xu
parent 3bbc902ece
commit 4e0146a94c
1 changed files with 4 additions and 3 deletions
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7
arch/arm64/lib/crypto/sha256-ce.S
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@ -123,10 +123,11 @@ CPU_LE( rev32 v19.16b, v19.16b )
add dgav.4s, dgav.4s, dg0v.4s
add dgbv.4s, dgbv.4s, dg1v.4s
/* return early if voluntary preemption is needed */
cond_yield 1f, x5, x6
/* handled all input blocks? */
cbz x2, 1f
cond_yield 3f, x5, x6
b 0b
cbnz x2, 0b
/* store new state */
1: st1 {dgav.4s, dgbv.4s}, [x0]