linux-kernel - Re: [PATCH 1/4] i2c: designware: Create shared header hosting driver name

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Date: Tue, 23 Apr 2024 18:22:15 -0700
From: Florian Fainelli <florian.fainelli@...adcom.com>
To: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: linux-kernel@...r.kernel.org,
 Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
 Mika Westerberg <mika.westerberg@...ux.intel.com>,
 Jan Dabros <jsd@...ihalf.com>, Andi Shyti <andi.shyti@...nel.org>,
 Lee Jones <lee@...nel.org>, Jiawen Wu <jiawenwu@...stnetic.com>,
 Mengyuan Lou <mengyuanlou@...-swift.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
 Andrew Lunn <andrew@...n.ch>, Duanqiang Wen <duanqiangwen@...-swift.com>,
 "open list:SYNOPSYS DESIGNWARE I2C DRIVER" <linux-i2c@...r.kernel.org>,
 "open list:WANGXUN ETHERNET DRIVER" <netdev@...r.kernel.org>
Subject: Re: [PATCH 1/4] i2c: designware: Create shared header hosting driver
 name

On 4/23/2024 4:59 PM, Andy Shevchenko wrote:
> Tue, Apr 23, 2024 at 04:36:19PM -0700, Florian Fainelli kirjoitti:
>> We have a number of drivers that reference the string "i2c_designware"
>> yet this is copied all over the places with opportunities for this
>> string being mis-used. Create a shared header that defines this as a
>> constant that other drivers can reference.
> 
> ...
> 
>>   #include <linux/i2c.h>
>> +#include <linux/i2c-designware.h>
> 
> Can it be hidden in the subfolder?

That would require the MFD and ethernet drivers to include relative to 
where they are in the source tree, do we really want that?

> 
> ...
> 
>> -#define DRIVER_NAME "i2c-designware-pci"
>> +#define DRIVER_NAME I2C_DESIGNWARE_NAME "-pci"
> 
> Oh, this makes all the things hard to read.

OK, besides there is a change for '_' when it was a '-' before, so maybe 
I should drop that hunk.

> 
>>   /* Work with hotplug and coldplug */
>> -MODULE_ALIAS("i2c_designware-pci");
>> +MODULE_ALIAS(DRIVER_NAME);
> 
> I believe we shouldn't use MODULE_ALIAS() without real justification.

Pre-existing change.
-- 
Florian

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