nvdimm: constify device_type structures

Declare device_type structure as const as it is only stored in the
type field of a device structure. This field is of type const, so add
const to declaration of device_type structure.

File size before:
  text	   data	    bss	    dec	    hex	filename
  19278	   3199	     16	  22493	   57dd	nvdimm/namespace_devs.o

File size after:
  text	   data	    bss	    dec	    hex	filename
  19929	   3160	     16	  23105	   5a41	nvdimm/namespace_devs.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index a518cb1b59d4238b675fccd695f45003af380296..eda027db09189d436d46b50bd73061c345bfd655 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,
 };