double unlock in rng_dev_read()

[Dan Carpenter]

It seems like we unlock rng_mutex twice (2.6.33-rc1).

drivers/char/hw_random/core.c
   151                  mutex_unlock(&rng_mutex);
   152
   153                  if (need_resched())
   154                          schedule_timeout_interruptible(1);
   155
   156                  if (signal_pending(current)) {
   157                          err = -ERESTARTSYS;
   158                          goto out;
   159                  }
   160          }
   161  out_unlock:
   162          mutex_unlock(&rng_mutex);
 
regards,
dan carpenter
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