[PATCH] pasemi_mac: ethtool get settings fix
Olof Johansson
olof at lixom.net
Wed Oct 7 03:10:54 EST 2009
Weird, I see my address in the to: line but I never got a copy in my inbox.
On Mon, Oct 05, 2009 at 05:27:56PM +0400, Valentine Barshak wrote:
> Not all pasemi mac interfaces can have a phy attached.
> For example, XAUI has no phy and phydev is NULL for it.
> In this case ethtool get settings causes kernel crash.
> Fix it by returning -EOPNOTSUPP if there's no PHY attached.
>
> Signed-off-by: Valentine Barshak <vbarshak at ru.mvista.com>
Acked-by: Olof Johansson <olof at lixom.net>
> ---
> drivers/net/pasemi_mac_ethtool.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff -pruN linux-2.6.orig/drivers/net/pasemi_mac_ethtool.c linux-2.6/drivers/net/pasemi_mac_ethtool.c
> --- linux-2.6.orig/drivers/net/pasemi_mac_ethtool.c 2009-02-14 03:23:08.000000000 +0300
> +++ linux-2.6/drivers/net/pasemi_mac_ethtool.c 2009-10-05 16:21:52.000000000 +0400
> @@ -71,6 +71,9 @@ pasemi_mac_ethtool_get_settings(struct n
> struct pasemi_mac *mac = netdev_priv(netdev);
> struct phy_device *phydev = mac->phydev;
>
> + if (!phydev)
> + return -EOPNOTSUPP;
> +
> return phy_ethtool_gset(phydev, cmd);
> }
>
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