Merge branches 'pm-core', 'pm-qos', 'pm-domains' and 'pm-opp'

[linux.git] / drivers / nvdimm / namespace_devs.c

diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index a518cb1b59d4238b675fccd695f45003af380296..ce3e8dfa10ad5ccc5285621e5c5b27b5c557e16b 100644 (file)
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -52,17 +52,17 @@ static void namespace_blk_release(struct device *dev)
        kfree(nsblk);
 }
 
-static struct device_type namespace_io_device_type = {
+static const struct device_type namespace_io_device_type = {
        .name = "nd_namespace_io",
        .release = namespace_io_release,
 };
 
-static struct device_type namespace_pmem_device_type = {
+static const struct device_type namespace_pmem_device_type = {
        .name = "nd_namespace_pmem",
        .release = namespace_pmem_release,
 };
 
-static struct device_type namespace_blk_device_type = {
+static const struct device_type namespace_blk_device_type = {
        .name = "nd_namespace_blk",
        .release = namespace_blk_release,
 };
@@ -962,8 +962,8 @@ static ssize_t __size_store(struct device *dev, unsigned long long val)
        struct nvdimm_drvdata *ndd;
        struct nd_label_id label_id;
        u32 flags = 0, remainder;
+       int rc, i, id = -1;
        u8 *uuid = NULL;
-       int rc, i;
 
        if (dev->driver || ndns->claim)
                return -EBUSY;
@@ -972,11 +972,13 @@ static ssize_t __size_store(struct device *dev, unsigned long long val)
                struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
 
                uuid = nspm->uuid;
+               id = nspm->id;
        } else if (is_namespace_blk(dev)) {
                struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
 
                uuid = nsblk->uuid;
                flags = NSLABEL_FLAG_LOCAL;
+               id = nsblk->id;
        }
 
        /*
@@ -1039,10 +1041,11 @@ static ssize_t __size_store(struct device *dev, unsigned long long val)
 
        /*
         * Try to delete the namespace if we deleted all of its
-        * allocation, this is not the seed device for the region, and
-        * it is not actively claimed by a btt instance.
+        * allocation, this is not the seed or 0th device for the
+        * region, and it is not actively claimed by a btt, pfn, or dax
+        * instance.
         */
-       if (val == 0 && nd_region->ns_seed != dev && !ndns->claim)
+       if (val == 0 && id != 0 && nd_region->ns_seed != dev && !ndns->claim)
                nd_device_unregister(dev, ND_ASYNC);
 
        return rc;