Re: [PATCH] hwrng: Add TX4939 RNG driver

[Atsushi Nemoto <anemo@mba.ocn.ne.jp>]

On Sun, 31 May 2009 12:00:09 -0500, Matt Mackall <mpm@selenic.com> wrote:
> > >From the datasheet:
> > 
> >     The quality of the random numbers generated immediately after
> >     reset can be insufficient.  Therefore, do not use random
> >     numbers obtained from the first and second generations; use
> >     the ones from the third or subsequent generation.
> 
> Does the datasheet say anything about -how- the random numbers are
> produced? Most physical sources that I'm aware of don't have this sort
> of issue. But some pseudo-RNGs do. So this looks a little worrisome.

Nothing for "how".  If a RNG was actually a pseudo-RNG, does anything
a driver should do?  Any future plan to select one RNG from multiple
sources based on randomness grade?

---
Atsushi Nemoto