crypto: inside-secure - refrain from unneeded invalidations
The check to know if an invalidation is needed (i.e. when the context changes) is done even if the context does not exist yet. This happens when first setting a key for ciphers and/or hmac operations. This commits adds a check in the _setkey functions to only check if an invalidation is needed when a context exists, as there is no need to perform this check otherwise. Signed-off-by: Ofer Heifetz <oferh@marvell.com> [Antoine: commit message and added a comment and reworked one of the checks] Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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