unsupported_sign_init
ATTRIBUTE_WARN_UNUSED_RET int unsupported_sign_init(struct ec_sign_context * ctx);
.sign_init = unsupported_sign_init,
.sign_init = unsupported_sign_init,
.sign_init = unsupported_sign_init,
.sign_init = unsupported_sign_init,
if ((sig->sign_init == unsupported_sign_init) ||