1 files changed, 0 insertions, 153 deletions

diff --git a/drivers/dax/pmem.c b/drivers/dax/pmem.c
deleted file mode 100644
index 2c1f459c0c63..000000000000
--- a/drivers/dax/pmem.c
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Copyright(c) 2016 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- */
-#include <linux/percpu-refcount.h>
-#include <linux/memremap.h>
-#include <linux/module.h>
-#include <linux/pfn_t.h>
-#include "../nvdimm/pfn.h"
-#include "../nvdimm/nd.h"
-#include "device-dax.h"
-
-struct dax_pmem {
-        struct device *dev;
-        struct percpu_ref ref;
-        struct dev_pagemap pgmap;
-        struct completion cmp;
-};
-
-static struct dax_pmem *to_dax_pmem(struct percpu_ref *ref)
-{
-        return container_of(ref, struct dax_pmem, ref);
-}
-
-static void dax_pmem_percpu_release(struct percpu_ref *ref)
-{
-        struct dax_pmem *dax_pmem = to_dax_pmem(ref);
-
-        dev_dbg(dax_pmem->dev, "trace\n");
-        complete(&dax_pmem->cmp);
-}
-
-static void dax_pmem_percpu_exit(void *data)
-{
-        struct percpu_ref *ref = data;
-        struct dax_pmem *dax_pmem = to_dax_pmem(ref);
-
-        dev_dbg(dax_pmem->dev, "trace\n");
-        wait_for_completion(&dax_pmem->cmp);
-        percpu_ref_exit(ref);
-}
-
-static void dax_pmem_percpu_kill(struct percpu_ref *ref)
-{
-        struct dax_pmem *dax_pmem = to_dax_pmem(ref);
-
-        dev_dbg(dax_pmem->dev, "trace\n");
-        percpu_ref_kill(ref);
-}
-
-static int dax_pmem_probe(struct device *dev)
-{
-        void *addr;
-        struct resource res;
-        int rc, id, region_id;
-        struct nd_pfn_sb *pfn_sb;
-        struct dev_dax *dev_dax;
-        struct dax_pmem *dax_pmem;
-        struct nd_namespace_io *nsio;
-        struct dax_region *dax_region;
-        struct nd_namespace_common *ndns;
-        struct nd_dax *nd_dax = to_nd_dax(dev);
-        struct nd_pfn *nd_pfn = &nd_dax->nd_pfn;
-
-        ndns = nvdimm_namespace_common_probe(dev);
-        if (IS_ERR(ndns))
-                return PTR_ERR(ndns);
-        nsio = to_nd_namespace_io(&ndns->dev);
-
-        dax_pmem = devm_kzalloc(dev, sizeof(*dax_pmem), GFP_KERNEL);
-        if (!dax_pmem)
-                return -ENOMEM;
-
-        /* parse the 'pfn' info block via ->rw_bytes */
-        rc = devm_nsio_enable(dev, nsio);
-        if (rc)
-                return rc;
-        rc = nvdimm_setup_pfn(nd_pfn, &dax_pmem->pgmap);
-        if (rc)
-                return rc;
-        devm_nsio_disable(dev, nsio);
-
-        pfn_sb = nd_pfn->pfn_sb;
-
-        if (!devm_request_mem_region(dev, nsio->res.start,
-                                resource_size(&nsio->res),
-                                dev_name(&ndns->dev))) {
-                dev_warn(dev, "could not reserve region %pR\n", &nsio->res);
-                return -EBUSY;
-        }
-
-        dax_pmem->dev = dev;
-        init_completion(&dax_pmem->cmp);
-        rc = percpu_ref_init(&dax_pmem->ref, dax_pmem_percpu_release, 0,
-                        GFP_KERNEL);
-        if (rc)
-                return rc;
-
-        rc = devm_add_action(dev, dax_pmem_percpu_exit, &dax_pmem->ref);
-        if (rc) {
-                percpu_ref_exit(&dax_pmem->ref);
-                return rc;
-        }
-
-        dax_pmem->pgmap.ref = &dax_pmem->ref;
-        dax_pmem->pgmap.kill = dax_pmem_percpu_kill;
-        addr = devm_memremap_pages(dev, &dax_pmem->pgmap);
-        if (IS_ERR(addr))
-                return PTR_ERR(addr);
-
-        /* adjust the dax_region resource to the start of data */
-        memcpy(&res, &dax_pmem->pgmap.res, sizeof(res));
-        res.start += le64_to_cpu(pfn_sb->dataoff);
-
-        rc = sscanf(dev_name(&ndns->dev), "namespace%d.%d", &region_id, &id);
-        if (rc != 2)
-                return -EINVAL;
-
-        dax_region = alloc_dax_region(dev, region_id, &res,
-                        le32_to_cpu(pfn_sb->align), addr, PFN_DEV|PFN_MAP);
-        if (!dax_region)
-                return -ENOMEM;
-
-        /* TODO: support for subdividing a dax region... */
-        dev_dax = devm_create_dev_dax(dax_region, id, &res, 1);
-
-        /* child dev_dax instances now own the lifetime of the dax_region */
-        dax_region_put(dax_region);
-
-        return PTR_ERR_OR_ZERO(dev_dax);
-}
-
-static struct nd_device_driver dax_pmem_driver = {
-        .probe = dax_pmem_probe,
-        .drv = {
-                .name = "dax_pmem",
-        },
-        .type = ND_DRIVER_DAX_PMEM,
-};
-
-module_nd_driver(dax_pmem_driver);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Intel Corporation");
-MODULE_ALIAS_ND_DEVICE(ND_DEVICE_DAX_PMEM);