linux-kernel - [PATCH 1/1] net: Hyper-V: Deletion of an unnecessary check before the function call "vfree"

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Date:	Thu, 20 Nov 2014 15:25:27 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Haiyang Zhang <haiyangz@...rosoft.com>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	devel@...uxdriverproject.org, netdev@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/1] net: Hyper-V: Deletion of an unnecessary check before
 the function call "vfree"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 20 Nov 2014 15:15:21 +0100

The vfree() function performs also input parameter validation. 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/hyperv/netvsc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index da2d346..ffe7481 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -548,8 +548,7 @@ int netvsc_device_remove(struct hv_device *device)
 	vmbus_close(device->channel);
 
 	/* Release all resources */
-	if (net_device->sub_cb_buf)
-		vfree(net_device->sub_cb_buf);
+	vfree(net_device->sub_cb_buf);
 
 	kfree(net_device);
 	return 0;
-- 
2.1.3

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