[PATCH 3/6] libnvdimm: Add device-tree based driver

Dan Williams dan.j.williams at intel.com
Sat Mar 24 04:07:11 AEDT 2018

On Fri, Mar 23, 2018 at 1:12 AM, Oliver O'Halloran <oohall at gmail.com> wrote:
> This patch adds peliminary device-tree bindings for the NVDIMM driver.


> Currently this only supports one bus (created at probe time) which all
> regions are added to with individual regions being created by a platform
> device driver.
> Signed-off-by: Oliver O'Halloran <oohall at gmail.com>
> ---
> I suspect the platform driver should be holding a reference to the
> created region. I left that out here since previously Dan has said
> he'd rather keep the struct device internal to libnvdimm and the only
> other way a region device can disappear is when the bus is unregistered.

Hmm, but this still seems broken if bus teardown races region
teardown. I think the more natural model, given the way libnvdimm is
structured, to have each of these of_nd_region instances create their
own nvdimm bus. Thoughts?

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