libnvdimm: add an api to cast a 'struct nd_region' to its 'struct device'

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For debug, it is useful for bus providers to be able to retrieve the
'struct device' associated with an nd_region instance that it
registered. We already have to_nd_region() to perform the reverse cast
operation, in fact its duplicate declaration can be removed from the
private drivers/nvdimm/nd.h header.

Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Dan Williams 2018-04-02 13:14:25 -07:00

parent 78727137fd

commit 243f29fe44

3 changed files with 9 additions and 1 deletions

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include/linux/libnvdimm.h

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