Re: [PATCH v7 2/8] i2c: muxes: add support for tsd,mule-i2c multiplexer

[Farouk Bouabid <farouk.bouabid@cherry.de>]

Hi Andi,

On 05.09.24 22:20, Andi Shyti wrote:
> Hi,
>
> On Wed, Sep 04, 2024 at 10:59:47AM GMT, Peter Rosin wrote:
>> 2024-09-04 at 10:35, Farouk Bouabid wrote:
>>> On 03.09.24 17:13, Andi Shyti wrote:
>>>
>>> [...]
>>>
>>>>> +        ret = i2c_mux_add_adapter(muxc, 0, reg);
>>>>> +        if (ret)
>>>>> +            return ret;
>>>> do we need to delete the adapters we added in previous cycles?
>>>>
>>> We calldevm_action_or_reset() before the loop to add adapter-removal to the error path. I think that does the job
>>>
>>> for us or am I missing something ?
>> I missed that too, but it LGTM. It's safe to call i2c_mux_del_adapters() as
>> soon the mux core has been allocated, so there is no risk it is called too
>> early or something.
> Just a question, still: is it the same calling
> i2c_mux_add_adapter() and calling mux_remove()?
>

We are basically wrapping i2c_mux_adapters_del() by mux_remove() 
(implemented in our driver) which is registered it as 
devm_add_action_or_reset and would be called for a non-0 return of the 
probe.  i2c_mux_adapters_del() will then remove added adapters (do 
nothing if none is added).


Thanks,

Farouk