dax/hmem: Parent dax_hmem devices

djbw · davejiang · commit 059edcc405e4 · 2026-04-01T08:12:18.000-07:00
For test purposes it is useful to be able to determine which "hmem_platform" device is hosting a given sub-device. Register hmem devices underneath "hmem_platform". Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Link: https://patch.msgid.link/20260327052821.440749-8-dan.j.williams@intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com>
diff --git a/drivers/dax/hmem/hmem.c b/drivers/dax/hmem/hmem.c
@@ -96,6 +96,7 @@ static int __hmem_register_device(struct device *host, int target_nid,
 		return -ENOMEM;
 	}
 
+	pdev->dev.parent = host;
 	pdev->dev.numa_node = numa_map_to_online_node(target_nid);
 	info = (struct memregion_info) {
 		.target_node = target_nid,

Original file line number	Diff line number	Diff line change
`@@ -96,6 +96,7 @@ static int __hmem_register_device(struct device *host, int target_nid,`
`96`	`96`	`return -ENOMEM;`
`97`	`97`	`}`
`98`	`98`
	`99`	`+ pdev->dev.parent = host;`
`99`	`100`	`pdev->dev.numa_node = numa_map_to_online_node(target_nid);`
`100`	`101`	`info = (struct memregion_info) {`
`101`	`102`	`.target_node = target_nid,`