linux-kernel - Re: [PATCH 16/18] i2c: i2c-core-base: Use the new i2c_acpi_dev_name() in i2c_set_dev

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Date:   Wed, 2 Dec 2020 09:49:04 +0000
From:   Dan Scally <djrscally@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-media@...r.kernel.org, devel@...ica.org, rjw@...ysocki.net,
        lenb@...nel.org, gregkh@...uxfoundation.org,
        mika.westerberg@...ux.intel.com, linus.walleij@...aro.org,
        bgolaszewski@...libre.com, wsa@...nel.org, yong.zhi@...el.com,
        sakari.ailus@...ux.intel.com, bingbu.cao@...el.com,
        tian.shu.qiu@...el.com, mchehab@...nel.org, robert.moore@...el.com,
        erik.kaneda@...el.com, pmladek@...e.com, rostedt@...dmis.org,
        sergey.senozhatsky@...il.com, linux@...musvillemoes.dk,
        kieran.bingham+renesas@...asonboard.com, jacopo+renesas@...ndi.org,
        laurent.pinchart+renesas@...asonboard.com,
        jorhand@...ux.microsoft.com, kitakar@...il.com,
        heikki.krogerus@...ux.intel.com
Subject: Re: [PATCH 16/18] i2c: i2c-core-base: Use the new i2c_acpi_dev_name()
 in i2c_set_dev_name()

On 02/12/2020 09:35, Andy Shevchenko wrote:
> Dan, does this mail among other my replies reach you?
> It seems you answered to Laurent's mails and leaving mine ignored. Just
> wondering if our servers have an issue again...
Morning - I got it, sorry. I just read Laurent's first and then called
it a night
> On Mon, Nov 30, 2020 at 09:18:56PM +0200, Andy Shevchenko wrote:
>> On Mon, Nov 30, 2020 at 07:12:41PM +0200, Laurent Pinchart wrote:
>>> On Mon, Nov 30, 2020 at 01:31:27PM +0000, Daniel Scally wrote:
>>>> From: Dan Scally <djrscally@...il.com>
>>>>
>>>> To make sure the new i2c_acpi_dev_name() always reflects the name of i2c
>>>> devices sourced from ACPI, use it in i2c_set_dev_name().
>>>>
>>>> Signed-off-by: Dan Scally <djrscally@...il.com>
>>> I'd squash this with 15/18, which would make it clear there's a memory
>>> leak :-)
>> ...
>>
>>>>  	if (adev) {
>>>> -		dev_set_name(&client->dev, "i2c-%s", acpi_dev_name(adev));
>>>> +		dev_set_name(&client->dev, i2c_acpi_dev_name(adev));
>>>>  		return;
>> But you split pattern used in i2c_dev_set_name().
>> What you need is to provide something like this
>>
>> #define I2C_DEV_NAME_FORMAT	"i2c-%s"
>>
>> const char *i2c_acpi_get_dev_name(...)
>> {
>> 	return kasprintf(..., I2C_DEV_NAME_FORMAT, ...);
>> }
>>
>> (Possible in the future if anybody needs
>>   const char *i2c_dev_get_name_by_bus_and_addr(int bus, unsigned short addr)
>> )
>>
>> And here
>>
>> -		dev_set_name(&client->dev, "i2c-%s", info->dev_name);
>> +		dev_set_name(&client->dev, I2C_DEV_NAME_FORMAT, info->dev_name);
>>
>> -		dev_set_name(&client->dev, "i2c-%s", acpi_dev_name(adev));
>> +		dev_set_name(&client->dev, I2C_DEV_NAME_FORMAT, acpi_dev_name(adev));
>>
Yeah ok, I like this approach much better, I'll switch to that.