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

From Florian Fainelli <f.fainelli@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH net-next v5 3/4] net: phy: Allow pre-declaration of MDIO devices
Date 2017-02-06 20:10 +0100
Message-ID <t7WPM-DN-13@gated-at.bofh.it> (permalink)
References <t7fKN-6bt-3@gated-at.bofh.it> <t7fKN-6bt-15@gated-at.bofh.it> <t7RQ8-5AW-65@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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

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Thread

[PATCH net-next v5 0/4] net: dsa: Support for pdata in dsa2 Florian Fainelli <f.fainelli@gmail.com> - 2017-02-04 22:10 +0100
  [PATCH net-next v5 2/4] net: dsa: Add support for platform data Florian Fainelli <f.fainelli@gmail.com> - 2017-02-04 22:10 +0100
  [PATCH net-next v5 4/4] ARM: orion: Register DSA switch as a MDIO device Florian Fainelli <f.fainelli@gmail.com> - 2017-02-04 22:10 +0100
  [PATCH net-next v5 3/4] net: phy: Allow pre-declaration of MDIO devices Florian Fainelli <f.fainelli@gmail.com> - 2017-02-04 22:10 +0100
    Re: [PATCH net-next v5 3/4] net: phy: Allow pre-declaration of MDIO  devices Andrew Lunn <andrew@lunn.ch> - 2017-02-06 14:50 +0100
      Re: [PATCH net-next v5 3/4] net: phy: Allow pre-declaration of MDIO  devices Florian Fainelli <f.fainelli@gmail.com> - 2017-02-06 20:10 +0100
    Re: [PATCH net-next v5 3/4] net: phy: Allow pre-declaration of MDIO  devices Andrew Lunn <andrew@lunn.ch> - 2017-02-06 15:10 +0100
      Re: [PATCH net-next v5 3/4] net: phy: Allow pre-declaration of MDIO  devices Florian Fainelli <f.fainelli@gmail.com> - 2017-02-06 20:20 +0100
  [PATCH net-next v5 1/4] net: dsa: Rename and export dev_to_net_device() Florian Fainelli <f.fainelli@gmail.com> - 2017-02-04 22:10 +0100

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