[RFC 1/4] libnvdimm: add to_{nvdimm,nd_region}_dev()

[Oliver]

On Tue, Jul 11, 2017 at 9:53 AM, Dan Williams <dan.j.williams at intel.com> wrote:
> On Tue, Jun 27, 2017 at 3:28 AM, Oliver O'Halloran <oohall at gmail.com> wrote:
>> struct device contains the ->of_node pointer so that devices can be
>> assoicated with the device-tree node that created them on DT platforms.
>> libnvdimm hides the struct device for regions and nvdimm devices inside
>> of an opaque structure so this patch adds accessors for each to allow
>> the of_nvdimm driver to set the of_node pointer.
>
> I'd rather go the other way and pass in the of_node to the bus and
> dimm registration routines. It's a generic property of the device so
> we should handle it like other generic device properties that get set
> at initialization time like 'attr_groups' in nvdimm_bus_descriptor, or
> a new parameter to nvdimm_create().

Sure. I just figured it would be preferable to keep firmware specific
details inside the firmware driver rather than adding #ifdef CONFIG_OF
around the place. Do you have any objections to making nvdimm_create()
take a descriptor structure rather than adding a parameter?