Re: [PATCH v3 06/10] mtd: intel-dg: wake card on operations

[Miquel Raynal <miquel.raynal@bootlin.com>]

On 29/12/2024 at 15:08:56 GMT, "Usyskin, Alexander" <alexander.usyskin@intel.com> wrote:

>> 
>> Hello Alexander,
>> 
>> >> If so, I have to add patch for mtd subsystem to always have device for
>> master
>> >> initialized regardless of kernel flag.
>> >> Only to initialize struct device, not to create full mtd node.
>> >>
>> >> Miquel - are you agree to this?
>> 
>> Conceptually yes, but please mind one thing: we do not break
>> userspace. So if you want to keep the master mtd device, fine, but you
>> need to do it in a consistent way so that people not enabling the kernel
>> flag won't get a new device in their rootfs, shifting all indexes
>> upwards.
>> 
>> That being said, you are probably going in the right direction by doing
>> that.
>> 
>> Thanks,
>> Miquèl
>
> I've looked into this endeavour and seemed that there a need for special
> device class and careful attention in release flow to use right class.
> It will take time to do right.
> Miquel, Rodrigo, Karthik, Lucas - may the DG NVM code be merged in the current
> form and this device be added later?

In general, yes. But maybe you want to select
CONFIG_MTD_PARTITIONED_MASTER (IIUC your problem).

Thanks,
Miquèl