linux-stable/drivers/dax/cxl.c
Dan Williams 2532f41607 dax: Cleanup extra dax_region references
Now that free_dev_dax_id() internally manages the references it needs
the extra references taken by the dax_region drivers are not needed.

Reported-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Link: https://lore.kernel.org/r/168577285161.1672036.8111253437794419696.stgit@dwillia2-xfh.jf.intel.com
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
2023-06-23 01:03:50 -06:00

47 lines
1.2 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright(c) 2023 Intel Corporation. All rights reserved. */
#include <linux/module.h>
#include <linux/dax.h>
#include "../cxl/cxl.h"
#include "bus.h"
static int cxl_dax_region_probe(struct device *dev)
{
struct cxl_dax_region *cxlr_dax = to_cxl_dax_region(dev);
int nid = phys_to_target_node(cxlr_dax->hpa_range.start);
struct cxl_region *cxlr = cxlr_dax->cxlr;
struct dax_region *dax_region;
struct dev_dax_data data;
if (nid == NUMA_NO_NODE)
nid = memory_add_physaddr_to_nid(cxlr_dax->hpa_range.start);
dax_region = alloc_dax_region(dev, cxlr->id, &cxlr_dax->hpa_range, nid,
PMD_SIZE, IORESOURCE_DAX_KMEM);
if (!dax_region)
return -ENOMEM;
data = (struct dev_dax_data) {
.dax_region = dax_region,
.id = -1,
.size = range_len(&cxlr_dax->hpa_range),
};
return PTR_ERR_OR_ZERO(devm_create_dev_dax(&data));
}
static struct cxl_driver cxl_dax_region_driver = {
.name = "cxl_dax_region",
.probe = cxl_dax_region_probe,
.id = CXL_DEVICE_DAX_REGION,
.drv = {
.suppress_bind_attrs = true,
},
};
module_cxl_driver(cxl_dax_region_driver);
MODULE_ALIAS_CXL(CXL_DEVICE_DAX_REGION);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Intel Corporation");
MODULE_IMPORT_NS(CXL);