sha224_init
sha224_init(SHA224_CTX(desc));
static const u32 sha224_init[] = {
memcpy(digest, sha224_init, sizeof(sha224_init));
void sha224_init(struct sha224_ctx *ctx);
EXPORT_SYMBOL_GPL(sha224_init);
sha224_init(&ctx);
#define HASH_INIT sha224_init