[PATCH 0/3] s390/crypto: Enable CONTEXT_ANALYSIS

Enable CONTEXT_ANALYSYS for s390's crypto code.

Static code checking for acquiring and releasing locks used to be done
with sparse. That was removed with [1] and replaced with a clang based
approach [2]. The new approach requires that each subsystem needs to be
explicitly enabled for checking.

Do that for s390's crypto code. In order to avoid false positives the
code has to be slightly reworked, since conditionally acquiring and
releasing locks does not work with the checker (besides that this is
sub optimal coding style).

[1] 5b63d0ae94cc ("compiler-context-analysis: Remove Sparse support")
[2] 3269701cb256 ("compiler-context-analysis: Add infrastructure for Context Analysis with Clang")

Note:

- "Pre-existing issues" reported by AI will not be addressed in the
  context of this series

Heiko Carstens (3):
  s390/crypto: Rework ctr_aes_crypt() to remove conditional locking
  s390/crypto: Rework ctr_paes_do_crypt() to remove conditional locking
  s390/crypto: Enable CONTEXT_ANALYSIS

 arch/s390/crypto/Makefile    |   2 +
 arch/s390/crypto/aes_s390.c  |  54 +++++++++++-------
 arch/s390/crypto/paes_s390.c | 104 ++++++++++++++++++++---------------
 3 files changed, 97 insertions(+), 63 deletions(-)

-- 
2.53.0