linux-kernel - [PATCH] virtio-balloon: Delete an unnecessary check before the function call "iput"

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Message-ID: <b6855b5c-386b-bed9-f374-96481506056e@users.sourceforge.net>
Date:	Mon, 18 Jul 2016 21:25:02 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	virtualization@...ts.linux-foundation.org,
	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] virtio-balloon: Delete an unnecessary check before the
 function call "iput"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 18 Jul 2016 21:17:18 +0200

The iput() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/virtio/virtio_balloon.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 888d5f8..81f7d6c 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -611,8 +611,7 @@ static void virtballoon_remove(struct virtio_device *vdev)
 	cancel_work_sync(&vb->update_balloon_stats_work);
 
 	remove_common(vb);
-	if (vb->vb_dev_info.inode)
-		iput(vb->vb_dev_info.inode);
+	iput(vb->vb_dev_info.inode);
 	kfree(vb);
 }
 
-- 
2.9.2