add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/nvdimm/of_pmem.c
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@@ -9,17 +9,6 @@
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 #include <linux/ioport.h>
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 #include <linux/slab.h>
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-static const struct attribute_group *region_attr_groups[] = {
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-	&nd_region_attribute_group,
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-	&nd_device_attribute_group,
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-	NULL,
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-};
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-
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-static const struct attribute_group *bus_attr_groups[] = {
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-	&nvdimm_bus_attribute_group,
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-	NULL,
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-};
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-
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 struct of_pmem_private {
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 	struct nvdimm_bus_descriptor bus_desc;
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 	struct nvdimm_bus *bus;
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@@ -41,7 +30,6 @@
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 	if (!priv)
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 		return -ENOMEM;
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-	priv->bus_desc.attr_groups = bus_attr_groups;
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 	priv->bus_desc.provider_name = kstrdup(pdev->name, GFP_KERNEL);
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 	priv->bus_desc.module = THIS_MODULE;
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 	priv->bus_desc.of_node = np;
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@@ -66,16 +54,18 @@
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 		 * structures so passing a stack pointer is fine.
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 		 */
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 		memset(&ndr_desc, 0, sizeof(ndr_desc));
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-		ndr_desc.attr_groups = region_attr_groups;
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 		ndr_desc.numa_node = dev_to_node(&pdev->dev);
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+		ndr_desc.target_node = ndr_desc.numa_node;
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 		ndr_desc.res = &pdev->resource[i];
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 		ndr_desc.of_node = np;
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 		set_bit(ND_REGION_PAGEMAP, &ndr_desc.flags);
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 		if (is_volatile)
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 			region = nvdimm_volatile_region_create(bus, &ndr_desc);
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-		else
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+		else {
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+			set_bit(ND_REGION_PERSIST_MEMCTRL, &ndr_desc.flags);
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 			region = nvdimm_pmem_region_create(bus, &ndr_desc);
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+		}
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 		if (!region)
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 			dev_warn(&pdev->dev, "Unable to register region %pR from %pOF\n",
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@@ -100,6 +90,7 @@
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 static const struct of_device_id of_pmem_region_match[] = {
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 	{ .compatible = "pmem-region" },
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+	{ .compatible = "pmem-region-v2" },
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 	{ },
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 };
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