linux-kernel - [PATCH 5/9] staging: ath6kl: use free

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Date:	Sun, 26 Sep 2010 13:58:18 +0400
From:	Vasiliy Kulikov <segooon@...il.com>
To:	kernel-janitors@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Vipin Mehta <vmehta@...eros.com>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	Joe Perches <joe@...ches.com>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 5/9] staging: ath6kl: 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/ath6kl/os/linux/ar6000_drv.c |    8 --------
 1 files changed, 0 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/ath6kl/os/linux/ar6000_drv.c b/drivers/staging/ath6kl/os/linux/ar6000_drv.c
index daba6e4..c5a6d6c 100644
--- a/drivers/staging/ath6kl/os/linux/ar6000_drv.c
+++ b/drivers/staging/ath6kl/os/linux/ar6000_drv.c
@@ -2143,11 +2143,7 @@ ar6000_destroy(struct net_device *dev, unsigned int unregister)
         unregister_netdev(dev);
         is_netdev_registered = 0;
     }
-#ifndef free_netdev
-    kfree(dev);
-#else
     free_netdev(dev);
-#endif
 
 #ifdef ATH6K_CONFIG_CFG80211
     ar6k_cfg80211_deinit(ar);
@@ -6429,11 +6425,7 @@ A_STATUS ar6000_remove_ap_interface(AR_SOFTC_T *ar)
         ar6000_stop_ap_interface(ar);
 
         unregister_netdev(arApNetDev);
-#ifndef free_netdev
-        kfree(arApNetDev);
-#else
         free_netdev(apApNetDev);
-#endif
 
         A_PRINTF("Remove AP interface\n");
     }
-- 
1.7.0.4

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