Re: [PATCH v5 1/3] debugfs_create_regset32() support 8/16 bit width registers

[Arnd Bergmann]

On Mon, Oct 2, 2023, at 21:07, Frank Li wrote:
> On Mon, Oct 02, 2023 at 08:55:23PM +0200, Arnd Bergmann wrote:
>
>> A few other thoughts from my side, all of which could be ignored:
>> 
>> - if the ioport access is not an important feature, we can instead
>>   support 64-bit readl() as I commented in a previous email. We just
>>   can't easily have both.
>
> We will get 64bit dma edma soon. So I can test and upstream it when I get
> it.

Ok, so if we already know this is going to be needed, then I would skip
the PIO support and just use read{bwlq}() with the optional swab() instead
of the ioread variants. Otherwise there is a risk that someone starts
relying on the port I/O feature and make it harder to remove.

     Arnd