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If the ccp is built as a built-in module, then ccp-crypto (whether built as a module or a built-in module) will be able to load and it will register its crypto algorithms. If the system does not have a CCP this will result in -ENODEV being returned whenever a command is attempted to be queued by the registered crypto algorithms. Add an API, ccp_present(), that checks for the presence of a CCP on the system. The ccp-crypto module can use this to determine if it should register it's crypto alogorithms. Cc: stable@vger.kernel.org Reported-by: Scot Doyle <lkml14@scotdoyle.com> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Tested-by: Scot Doyle <lkml14@scotdoyle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>