[PATCH v2 0/2] Rework cpacf_kma() function

[Harald Freudenberger <freude@linux.ibm.com>]

The CPACF inline function cpacf_kma() has return type void thus
indicating no direct information about success or failure. The
majori of the other CPACF inline functions do return either
failure/success or the number of bytes processed.

Rework the CPACF inline function cpacf_kma() and the only caller - the
AES GCM implementation in arch/s390/crypto/aes_s390.c to return the
value of the condition code set on completion of the instruction.

@Herbert Xu, @Heiko Carstens: As the main change is in cpacf.h and the
slight rework in aes_s390.c is petty simple I would go with delivering
this patches via s390 subsystem.

Changelog:
v1: initial version
v2: Added Holger's RB - no code changes.

Harald Freudenberger (2):
  s390/cpacf: Rework cpacf_kma() to return condition code
  s390/crypto: Handle cpacf_kma() return code

 arch/s390/crypto/aes_s390.c   | 11 +++++++----
 arch/s390/include/asm/cpacf.h | 24 ++++++++++++++++++------
 2 files changed, 25 insertions(+), 10 deletions(-)


base-commit: df2908090cda368b01ff43709f51890076c56157
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2.43.0