On 12/20/2016 03:51 PM, Ruslan Babayev wrote:
> Fixes a crash observed on Octeon.
>
> Signed-off-by: Ruslan Babayev <rus...@babayev.com>
> Fixes: ec988ad78ed6 ("phy: Don't increment MDIO bus refcount unless it's a
> different owner")
Assuming you saw this with the staging Octeon driver, a fix has already
been submitted:
https://lkml.org/lkml/2016/12/14/756
If this is with a different driver, I would rather we fix it in a
similar way that the fix proposed above.
Thanks
> ---
> drivers/net/phy/phy_device.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
> index 9c06f8028f0c..043328b85643 100644
> --- a/drivers/net/phy/phy_device.c
> +++ b/drivers/net/phy/phy_device.c
> @@ -905,7 +905,8 @@ EXPORT_SYMBOL(phy_attached_print);
> int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
> u32 flags, phy_interface_t interface)
> {
> - struct module *ndev_owner = dev->dev.parent->driver->owner;
> + struct device *parent = dev->dev.parent;
> + struct module *ndev_owner = parent ? parent->driver->owner : NULL;
> struct mii_bus *bus = phydev->mdio.bus;
> struct device *d = &phydev->mdio.dev;
> int err;
>
--
Florian
