From: Dan Williams <dan.j.williams@intel.com>
Date: Fri, 27 Mar 2026 05:28:19 +0000 (-0700)
Subject: dax/hmem: Parent dax_hmem devices
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=059edcc405e46cc10ee65ab2c039aa6bccfbb3a0;p=thirdparty%2Flinux.git

dax/hmem: Parent dax_hmem devices

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
index e1dae83dae8d2..af21f66bf872c 100644
--- 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,