Here is version 2 of the khwrngd patch set.
The first patch is unchanged.
The second one now introduces an initial derating factor,
as suggested by hpa. It's called derating_current to simplify
patch#3, and the thread creation has moved into hwrng_init,
because it may later depend on the hwrng's derating property.
The third patch only introduces the derating member to
struct hwrng and provides a configurable default.
I could imagine to further add a derating_extra parameter
for conservative admins, in order to diminish the entropy
estimation given from the driver author even more. OTOH
too many knobs might cause confusion.
Torsten
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