[PATCH] mfd: dln2: Switch to kvfree_rcu() API

["Uladzislau Rezki (Sony)" <urezki@gmail.com>]

Instead of invoking a synchronize_rcu() to free a pointer
after a grace period we can directly make use of new API
that does the same but in more efficient way.

TO: Lee Jones <lee.jones@linaro.org>
TO: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
 drivers/mfd/dln2.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mfd/dln2.c b/drivers/mfd/dln2.c
index 852129ea0766..365e3e77cac4 100644
--- a/drivers/mfd/dln2.c
+++ b/drivers/mfd/dln2.c
@@ -179,10 +179,8 @@ void dln2_unregister_event_cb(struct platform_device *pdev, u16 id)
 
 	spin_unlock_irqrestore(&dln2->event_cb_lock, flags);
 
-	if (found) {
-		synchronize_rcu();
-		kfree(i);
-	}
+	if (found)
+		kvfree_rcu(i);
 }
 EXPORT_SYMBOL(dln2_unregister_event_cb);
 
-- 
2.30.2