linux-kernel - [PATCH] ieee802154-atusb: Delete an unnecessary check before the function call "kfree

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Message-ID: <564B5327.4010307@osg.samsung.com>
Date:	Tue, 17 Nov 2015 17:17:43 +0100
From:	Stefan Schmidt <stefan@....samsung.com>
To:	Alexander Aring <alex.aring@...il.com>,
	Stefan Schmidt <stefan@....samsung.com>,
	linux-wpan@...r.kernel.org, netdev@...r.kernel.org,
	Marcel Holtmann <marcel@...tmann.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] ieee802154-atusb: Delete an unnecessary check before the
 function call "kfree_skb"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 16 Nov 2015 13:50:23 +0100

The kfree_skb() 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/net/ieee802154/atusb.c | 3 +--
  1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ieee802154/atusb.c b/drivers/net/ieee802154/atusb.c
index 199a94a..b1cd865 100644
--- a/drivers/net/ieee802154/atusb.c
+++ b/drivers/net/ieee802154/atusb.c
@@ -310,8 +310,7 @@ static void atusb_free_urbs(struct atusb *atusb)
  		urb = usb_get_from_anchor(&atusb->idle_urbs);
  		if (!urb)
  			break;
-		if (urb->context)
-			kfree_skb(urb->context);
+		kfree_skb(urb->context);
  		usb_free_urb(urb);
  	}
  }
-- 
2.6.2

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