diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h index 9992f95ef992a0276fa0878ddeb3282a8a224ca3..0ef9829f2ad69e2e15b743ac1582858a48124067 100644 --- a/arch/s390/crypto/crypt_s390.h +++ b/arch/s390/crypto/crypt_s390.h @@ -296,6 +296,10 @@ static inline int crypt_s390_func_available(int func) unsigned char status[16]; int ret; + /* check if CPACF facility (bit 17) is available */ + if (!(stfl() & 1ULL << (31 - 17))) + return 0; + switch (func & CRYPT_S390_OP_MASK) { case CRYPT_S390_KM: ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0);