Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

[linux.git] / drivers / dax / pmem.c

diff --git a/drivers/dax/pmem.c b/drivers/dax/pmem.c
index 9f2a0b4fd8012c05b79a561ee4c2711e64c17fa5..8d8c852ba8f209c5118987aa2dbb98cf3290d213 100644 (file)
--- a/drivers/dax/pmem.c
+++ b/drivers/dax/pmem.c
@@ -58,13 +58,12 @@ static void dax_pmem_percpu_kill(void *data)
 
 static int dax_pmem_probe(struct device *dev)
 {
-       int rc;
        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_region *nd_region;
        struct nd_namespace_io *nsio;
        struct dax_region *dax_region;
        struct nd_namespace_common *ndns;
@@ -123,14 +122,17 @@ static int dax_pmem_probe(struct device *dev)
        /* adjust the dax_region resource to the start of data */
        res.start += le64_to_cpu(pfn_sb->dataoff);
 
-       nd_region = to_nd_region(dev->parent);
-       dax_region = alloc_dax_region(dev, nd_region->id, &res,
+       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, &res, 1);
+       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);