linux-kernel - [PATCH 13/14] fec_mpc52xx: delete unneeded test before of_node

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Message-Id: <1407492475-26283-13-git-send-email-Julia.Lawall@lip6.fr>
Date:	Fri,  8 Aug 2014 12:07:54 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	netdev@...r.kernel.org
Cc:	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Subject: [PATCH 13/14] fec_mpc52xx: delete unneeded test before of_node_put

From: Julia Lawall <Julia.Lawall@...6.fr>

Of_node_put supports NULL as its argument, so the initial test is not
necessary.

Suggested by Uwe Kleine-König.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e;
@@

-if (e)
   of_node_put(e);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/net/ethernet/freescale/fec_mpc52xx.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_mpc52xx.c b/drivers/net/ethernet/freescale/fec_mpc52xx.c
index 9947765..ff55fbb 100644
--- a/drivers/net/ethernet/freescale/fec_mpc52xx.c
+++ b/drivers/net/ethernet/freescale/fec_mpc52xx.c
@@ -1015,8 +1015,7 @@ mpc52xx_fec_remove(struct platform_device *op)
 
 	unregister_netdev(ndev);
 
-	if (priv->phy_node)
-		of_node_put(priv->phy_node);
+	of_node_put(priv->phy_node);
 	priv->phy_node = NULL;
 
 	irq_dispose_mapping(ndev->irq);

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