EXYNOS_RNG_SEED_SIZE
if (slen < EXYNOS_RNG_SEED_SIZE)
*read = min_t(size_t, dlen, EXYNOS_RNG_SEED_SIZE);
u8 seed[EXYNOS_RNG_SEED_SIZE];
.seedsize = EXYNOS_RNG_SEED_SIZE,
u8 seed_save[EXYNOS_RNG_SEED_SIZE];