[PATCH v6.8 1/2] nvmem: layouts: refactor .add_cells() callback arguments

[Michael Walle]

> From: Rafał Miłecki <rafal at milecki.pl>
> 
> Simply pass whole "struct nvmem_layout" instead of single variables.
> There is nothing in "struct nvmem_layout" that we have to hide from
> layout drivers. They also access it during .probe() and .remove().
> 
> Thanks to this change:
> 
> 1. API gets more consistent
>    All layouts drivers callbacks get the same argument
> 
> 2. Layouts get correct device
>    Before this change NVMEM core code was passing NVMEM device instead
>    of layout device. That resulted in:
>    * Confusing prints
>    * Calling devm_*() helpers on wrong device
>    * Helpers like of_device_get_match_data() dereferencing NULLs
> 
> 3. It gets possible to get match data
>    First of all nvmem_layout_get_match_data() requires passing "struct
>    nvmem_layout" which .add_cells() callback didn't have before this. 
> It
>    doesn't matter much as it's rather useless now anyway (and will be
>    dropped).
>    What's more important however is that of_device_get_match_data() can
>    be used now thanks to owning a proper device pointer.
> 
> Signed-off-by: Rafał Miłecki <rafal at milecki.pl>

LGTM,
Reviewed-by: Michael Walle <michael at walle.cc>