On čtvrtek 27. září 2018 10:55:11 CEST, Marco Felsch wrote:

Hi Phil,

On 18-09-27 09:45, Phil Reid wrote:

quoted

On 26/09/2018 5:42 PM, Marco Felsch wrote:

quoted

On 18-09-26 07:55, Phil Reid wrote: ...

G'day Marco,

Sorry I still don't follow.
I've got a mcp23s18 in one of my systems and debugfs seems to work fine.

one_regmap_config is only used for the S08/S17 to fiddle with 
the name / label

I know, but if I read the code correctly it shouldn't work, because in
your case one_regmap_config is never modified, as you told. But it is
initialized to NULL. This confuses me a bit.

This tested should not be made for the MCP_TYPE_S18 case.

Ah, right. This means that the stable tree(s) need this follow-up patch 
from February, too:

  https://patchwork.ozlabs.org/patch/875045/

Thanks for catching this.

With kind regards,
Jan