hwrng: core - Fix double unlock in rng_dev_read
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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@ -158,10 +158,11 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf,
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goto out;
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}
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}
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out_unlock:
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mutex_unlock(&rng_mutex);
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out:
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return ret ? : err;
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out_unlock:
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mutex_unlock(&rng_mutex);
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goto out;
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}
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