CRYPTO_TFM_REQ_MAY_SLEEP 65 arch/x86/include/asm/crypto/glue_helper.h desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; CRYPTO_TFM_REQ_MAY_SLEEP 415 include/crypto/algapi.h if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)