Re: [PATCH-v2 4/4] random: clean up interrupt entropy accounting for archs w/o cycle counters

[George Spelvin]

+	if (cycles || (fast_pool->notimer_count >= 32))
+		credit++;

Ah, this addresses my concern about too few interrupts, too.  If the
(non-timer) interrupt rate is less than 32/second, you'll never get any
credit.

(If you want to support this mode of operation and still have a non-zero
credit rate, move the clear of notimer_count into this condition.  Then
you get 1 bit per 32 non-timer interrupts no matter how slow.)
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