From f5908267b67917b8cbd98b27fd2be9b5f62ec76f Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Wed, 23 Dec 2009 23:22:34 +0800 Subject: [PATCH] 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 Signed-off-by: Herbert Xu --- drivers/char/hw_random/core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index e989f67..3d9c61e 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -158,10 +158,11 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf, goto out; } } -out_unlock: - mutex_unlock(&rng_mutex); out: return ret ? : err; +out_unlock: + mutex_unlock(&rng_mutex); + goto out; } -- 1.8.2.3