linux-kernel - [PATCH 6/9] staging: octeon: use free

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Message-Id: <1285495102-22111-1-git-send-email-segooon@gmail.com>
Date:	Sun, 26 Sep 2010 13:58:21 +0400
From:	Vasiliy Kulikov <segooon@...il.com>
To:	kernel-janitors@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Ralf Baechle <ralf@...ux-mips.org>,
	David Daney <ddaney@...iumnetworks.com>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 6/9] staging: octeon: use free_netdev(netdev) instead of kfree()

It is not guaranteed that free_netdev() is macro.
Freeing netdev without free_netdev() leads to net, tx leaks.
I might lead to dereferencing freed pointer.

---
 drivers/staging/octeon/ethernet.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c
index fb568a9..a8f780e 100644
--- a/drivers/staging/octeon/ethernet.c
+++ b/drivers/staging/octeon/ethernet.c
@@ -670,7 +670,7 @@ static int __init cvm_oct_init_module(void)
 
 			if (register_netdev(dev) < 0) {
 				pr_err("Failed to register ethernet device for POW\n");
-				kfree(dev);
+				free_netdev(dev);
 			} else {
 				cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev;
 				pr_info("%s: POW send group %d, receive group %d\n",
@@ -756,12 +756,12 @@ static int __init cvm_oct_init_module(void)
 			}
 
 			if (!dev->netdev_ops) {
-				kfree(dev);
+				free_netdev(dev);
 			} else if (register_netdev(dev) < 0) {
 				pr_err("Failed to register ethernet device "
 					 "for interface %d, port %d\n",
 					 interface, priv->port);
-				kfree(dev);
+				free_netdev(dev);
 			} else {
 				cvm_oct_device[priv->port] = dev;
 				fau -=
@@ -815,7 +815,7 @@ static void __exit cvm_oct_cleanup_module(void)
 
 			cvm_oct_tx_shutdown_dev(dev);
 			unregister_netdev(dev);
-			kfree(dev);
+			free_netdev(dev);
 			cvm_oct_device[port] = NULL;
 		}
 	}
-- 
1.7.0.4

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