hwrng: core - Fix double unlock in rng_dev_read
authorHerbert Xu <herbert@gondor.apana.org.au>
Wed, 23 Dec 2009 15:22:34 +0000 (23:22 +0800)
committerHerbert Xu <herbert@gondor.apana.org.au>
Wed, 23 Dec 2009 15:22:34 +0000 (23:22 +0800)
When the loop terminates with size == 0 in rng_dev_read we will
unlock the rng mutex twice.

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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