Re: [PATCH net-next v5 3/4] net: phy: Allow pre-declaration of MDIO devices

[Florian Fainelli]

On 02/06/2017 05:48 AM, Andrew Lunn wrote:
>> diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
>> index 8a57f0b1242d..8850fcaf50db 100644
>> --- a/include/linux/mod_devicetable.h
>> +++ b/include/linux/mod_devicetable.h
>> @@ -501,6 +501,7 @@ struct platform_device_id {
>>  	kernel_ulong_t driver_data;
>>  };
>>  
>> +#define MDIO_NAME_SIZE		32
> 
> ...
> 
>> +struct mdio_board_info {
>> +	const char	*bus_id;
>> +	char		modalias[MDIO_NAME_SIZE];
>> +
> 
> I think it might be better to use MII_BUS_ID_SIZE. These are all
> related, so using one define should avoid surprise buffer overruns,
> truncation's.

I considered doing that, but left it that way because I valued the
"const" qualifier more than running out of buffer space. What I could do
though, is change the strcmp() in drivers/net/phy/mdio-boardinfo.c to be
bound by MII_BUS_ID_SIZE.
-- 
Florian