From ff77c150f71b761dcf29b9d1947df3165d2dc83e Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 23 Dec 2014 16:40:21 +1100
Subject: [PATCH] hwrng: core - Drop current rng in set_current_rng

Rather than having callers of set_current_rng call drop_current_rng,
we can do it directly in set_current_rng.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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