Re: [PATCH v12 7/7] nvmem: core: Expose cells through sysfs

[Srinivas Kandagatla <srinivas.kandagatla@linaro.org>]

On 11/10/2023 09:33, Miquel Raynal wrote:
> Hi Srinivas,
> 
> srinivas.kandagatla@linaro.org wrote on Wed, 11 Oct 2023 09:27:20 +0100:
> 
>> On 11/10/2023 08:15, Miquel Raynal wrote:
>>>>> +
>>>>> +	nvmem_cells_group.bin_attrs = cells_attrs;
>>>>> +
>>>>> +	ret = devm_device_add_groups(&nvmem->dev, nvmem_cells_groups);
>>>>> +	if (ret)
>>>>> +		goto unlock_mutex;
>>>> This is going to create groups after the nvmem device is added, isn't this going to be problem with user space notifications?
>>> Greg said it was not. I hope I understood correctly 😄
>>>
>>> And anyway, cells have never been available to userspace, so there is
>>> nothing userspace might expect yet?
>> I agree, but once we add sysfs uapi then this is going to change.
> 
> Can you elaborate? I'm not sure I follow you here. Is there still a
> problem you fear or you think it's okay?
> 
Now that we add cells to sysfs.
AFAIU, By the time the userspace sees the udev event from this device we 
might not have cells populated.

--srini


> Thanks,
> Miquèl