Re: [PATCH 1/2] Input: axp20x-pek: add support for AXP221 PEK

[Quentin Schulz <quentin.schulz@free-electrons.com>]

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Hi Maxime,

On 18/07/2017 09:57, Maxime Ripard wrote:
> On Tue, Jul 18, 2017 at 09:36:04AM +0200, Quentin Schulz wrote:
>>>> +
>>>> +	error = sysfs_create_group(&pdev->dev.kobj,
>>>> +				   axp20x_pek->attribute_group);
>>>
>>> Wouldn't it make more sense to just store the startup_time structure
>>> in the axp20x_pek structure, rather than duplicating all this?
>>>
>>
>> I don't know. Basically, you would need to recreate manually all the
>> structures in the probe function, but why not.
> 
> Why?
> 
> You have access to axp20x_pek in the readout function. You can just
> use the table stored in the structure here, and just ignore any
> argument you might have.
> 

All I'm saying is that:
struct axp20x_time is referenced in struct axp20x_pek_ext_attr which in
turn is referenced in struct dev_ext_attribute which is referenced in
struct attribute which is reference in const struct attribute_group
which is finally used to add/remove a sysfs group programmatically.

The earlier in the chain you decide to stop duplicating code, the most
structures you have to programmatically create. That was my point.

Quentin

-- 
Quentin Schulz, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com


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