linux-kernel - [PATCH v2] net: Hyper-V: Deletion of an unnecessary check before the function call "vfree"

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Message-ID: <5474FAD6.4060704@users.sourceforge.net>
Date:	Tue, 25 Nov 2014 22:55:34 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	David Miller <davem@...emloft.net>, devel@...uxdriverproject.org,
	netdev@...r.kernel.org
CC:	Haiyang Zhang <haiyangz@...rosoft.com>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH v2] net: Hyper-V: Deletion of an unnecessary check before
 the function call "vfree"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 25 Nov 2014 22:33:45 +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>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
---
 drivers/net/hyperv/netvsc.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 6b46311..6fc834e 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -561,9 +561,7 @@ 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);
 	free_netvsc_device(net_device);
 	return 0;
 }
-- 
2.1.3

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