Re: [PATCH net-next v2 1/3] net: phy: xgmiitorgmii: Check phy_driver ready before accessing

From: David Miller
Date: Thu Jun 28 2018 - 03:12:46 EST


From: Brandon Maier <brandon.maier@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 26 Jun 2018 12:50:48 -0500

> Since a phy_device is added to the global mdio_bus list during
> phy_device_register(), but a phy_device's phy_driver doesn't get
> attached until phy_probe(). It's possible of_phy_find_device() in
> xgmiitorgmii will return a valid phy with a NULL phy_driver. Leading to
> a NULL pointer access during the memcpy().
>
> Fixes this Oops:
...
> Signed-off-by: Brandon Maier <brandon.maier@xxxxxxxxxxxxxxxxxxx>

Applied.