srcu: Simple cleanup for cleanup_srcu_struct()

Pack six lines of code into two lines.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/kernel/srcu.c b/kernel/srcu.c
index 3e43a21..7cf5bab 100644 (file)
--- a/kernel/srcu.c
+++ b/kernel/srcu.c
@@ -282,12 +282,8 @@ static int srcu_readers_active(struct srcu_struct *sp)
  */
 void cleanup_srcu_struct(struct srcu_struct *sp)
 {
-       int sum;
-
-       sum = srcu_readers_active(sp);
-       WARN_ON(sum);  /* Leakage unless caller handles error. */
-       if (sum != 0)
-               return;
+       if (WARN_ON(srcu_readers_active(sp)))
+               return; /* Leakage unless caller handles error. */
        free_percpu(sp->per_cpu_ref);
        sp->per_cpu_ref = NULL;
 }