Re: [PATCH net 3/3] net: bcmgenet: reapply manual settings to the PHY

From: Florian Fainelli
Date: Tue Nov 05 2019 - 22:45:38 EST




On 11/5/2019 11:07 AM, Doug Berger wrote:
> The phy_init_hw() function may reset the PHY to a configuration
> that does not match manual network settings stored in the phydev
> structure. If the phy state machine is polled rather than event
> driven this can create a timing hazard where the phy state machine
> might alter the settings stored in the phydev structure from the
> value read from the BMCR.
>
> This commit follows invocations of phy_init_hw() by the bcmgenet
> driver with invocations of the genphy_config_aneg() function to
> ensure that the BMCR is written to match the settings held in the
> phydev structure. This prevents the risk of manual settings being
> accidentally altered.
>
> Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
> Signed-off-by: Doug Berger <opendmb@xxxxxxxxx>

Acked-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
--
Florian