tree 22cb2b7fe97fbfa7d2bf7bfb654a04fb3edcb42e
parent 5263e1ecdd1e5d09eeb39d26913da3ec16570fe0
author Gilles Peskine <Gilles.Peskine@arm.com> 1605273603 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> 1607363230 +0100

Don't require a call to add_entropy when 0 bytes are needed

If an RNG peripheral includes an entropy source, it would presumably
declare "initial_entropy_size" and "reseed_entropy_size" to be 0. In
this case, don't require the core to call "add_entropy".

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>