netdev - Re: [PATCH 2/2] net: phy: Don't use drv when it is NULL in phy_attached

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Date:   Mon, 21 Aug 2017 13:46:07 +0200
From:   Romain Perier <romain.perier@...labora.com>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] net: phy: Don't use drv when it is NULL in
 phy_attached_print

Hello,


Le 21/08/2017 à 11:45, Sergei Shtylyov a écrit :
> Hello!
>
> On 8/21/2017 10:52 AM, Romain Perier wrote:
>
>> Currently, if this logging function is used prior the phy driver is
>> binded to the phy device (that is usually done from .ndo_open),
>
>    s/binded/bound/.
>
>> 'phydev->drv' might be NULL, resulting in a kernel crash. That is
>> typically the case in the stmmac driver, info about the phy is displayed
>> during the registration of the MDIO bus, and then genphy driver is
>> binded
>
>    Likewise.
>
>> to this phydev when .ndo_open is called.
>>
>> This commit fixes the issue by using the right genphy driver, when
>> phydev->drv is NULL.
>>
>> Fixes: commit fbca164776e4 ("net: stmmac: Use the right logging functi")
>
>    "Commit" not needed here.

Fixed, thanks

Romain