tree dfc46deced14f60193d7a04a13870d768f2a8c1b
parent ad818080f69cbf064649d423e27af606c65e53ba
author Harald Freudenberger <freude@linux.vnet.ibm.com> 1499758582 +0200
committer Herbert Xu <herbert@gondor.apana.org.au> 1500372968 +0800

hwrng: use rng source with best quality

This patch rewoks the hwrng to always use the
rng source with best entropy quality.

On registation and unregistration the hwrng now
tries to choose the best (= highest quality value)
rng source. The handling of the internal list
of registered rng sources is now always sorted
by quality and the top most rng chosen.

Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>