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>

1 files changed, 2 insertions, 6 deletions

diff --git a/kernel/srcu.c b/kernel/srcu.c
index 3e43a214b4dc..7cf5baba96f9 100644
--- 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;
 }