[PATCH v1 0/1] PAES - Fix rc handling at skcipher_walk_done

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

All the 4 PAES cipher processing loops were not checking the return
value of skcipher_walk_done() immediately after calling it. This could
lead to error masking when both the walk operation failed and a
subsequent key conversion was needed (k < n condition).

Add immediate error checks after skcipher_walk_done() in all main
processing loops (ECB, CBC, CTR, XTS modes) to ensure walk errors are
properly propagated and not masked by subsequent operations.

Changelog:

v1: initial patch

Harald Freudenberger (1):
  s390/crypto: Fix return code handling at skcipher_walk_done in PAES
    algorithms

 arch/s390/crypto/paes_s390.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

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2.43.0