drbg_sec_strength
drbg->prev = kzalloc(drbg_sec_strength(drbg->core->flags),
unsigned short entropylen = drbg_sec_strength(drbg->core->flags);
unsigned int entropylen = drbg_sec_strength(drbg->core->flags);
unsigned int entropylen = drbg_sec_strength(drbg->core->flags);