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

From: Romain Perier
Date: Mon Aug 21 2017 - 07:46:17 EST


Hello,


Le 21/08/2017 Ã 11:45, Sergei Shtylyov a Ãcrit :
> 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