netdev - Re: [RFC PATCH net-next 2/9] net: phy: Guard against the presence of a netdev

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Date:   Wed, 22 May 2019 19:02:16 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Ioana Ciornei <ioana.ciornei@....com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "hkallweit1@...il.com" <hkallweit1@...il.com>,
        "maxime.chevallier@...tlin.com" <maxime.chevallier@...tlin.com>,
        "olteanv@...il.com" <olteanv@...il.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>
Subject: Re: [RFC PATCH net-next 2/9] net: phy: Guard against the presence of
 a netdev



On 5/22/2019 6:20 PM, Ioana Ciornei wrote:
> A prerequisite for PHYLIB to work in the absence of a struct net_device
> is to not access pointers to it.
> 
> Changes are needed in the following areas:
> 
>  - Printing: In some places netdev_err was replaced with phydev_err.
> 
>  - Incrementing reference count to the parent MDIO bus driver: If there
>    is no net device, then the reference count should definitely be
>    incremented since there is no chance that it was an Ethernet driver
>    who registered the MDIO bus.
> 
>  - Sysfs links are not created in case there is no attached_dev.
> 
>  - No netif_carrier_off is done if there is no attached_dev.
> 
> Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
> Signed-off-by: Vladimir Oltean <olteanv@...il.com>

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian