From 243f29fe449bbead69076ad861dbe8f51b42c4d7 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 2 Apr 2018 13:14:25 -0700 Subject: libnvdimm: add an api to cast a 'struct nd_region' to its 'struct device' 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 Signed-off-by: Dan Williams --- include/linux/libnvdimm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/libnvdimm.h') diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h index ff855ed965fb..e0684a678a1b 100644 --- a/include/linux/libnvdimm.h +++ b/include/linux/libnvdimm.h @@ -164,6 +164,7 @@ void nvdimm_bus_unregister(struct nvdimm_bus *nvdimm_bus); struct nvdimm_bus *to_nvdimm_bus(struct device *dev); struct nvdimm *to_nvdimm(struct device *dev); struct nd_region *to_nd_region(struct device *dev); +struct device *nd_region_dev(struct nd_region *nd_region); struct nd_blk_region *to_nd_blk_region(struct device *dev); struct nvdimm_bus_descriptor *to_nd_desc(struct nvdimm_bus *nvdimm_bus); struct device *to_nvdimm_bus_dev(struct nvdimm_bus *nvdimm_bus); -- cgit v1.2.3