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davinci_emac: Fix use after free in davinci_emac_remove 

free_netdev finally calls kfree which makes the contents
of ndev and priv (private data contained in ndev) invalid.

So iounmap should be called before free_netdev.

Cc: David S. Miller <davem@davemloft.net>
Cc: Chaithrika U S <chaithrika@ti.com>
Cc: Sriramakrishnan <srk@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Weil 2010-08-03 08:53:45 +00:00 committed by David S. Miller
parent 889635fd6b
commit 2a1bc0d56b
1 changed files with 1 additions and 1 deletions
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2
drivers/net/davinci_emac.c
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@ -2944,8 +2944,8 @@ static int __devexit davinci_emac_remove(struct platform_device *pdev)
release_mem_region(res->start, res->end - res->start + 1);
unregister_netdev(ndev);
free_netdev(ndev);
iounmap(priv->remap_addr);
free_netdev(ndev);
clk_disable(emac_clk);
clk_put(emac_clk);