hwrng: use rng source with best quality

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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>

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Harald Freudenberger 2017-07-11 09:36:22 +02:00 • committed by Herbert Xu

parent ad818080f6

commit 2bbb698388

1 changed files with 19 additions and 6 deletions

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drivers/char/hw_random/core.c

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