nvdimm/blk: don't allocate unused major device number
When alloc_disk(0) is used ->major is completely ignored, all devices
are allocated with a "major" of BLOCK_EXT_MAJOR.
So don't allocate nd_blk_major
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c
index 91a336e..e9ff922 100644
--- a/drivers/nvdimm/blk.c
+++ b/drivers/nvdimm/blk.c
@@ -31,8 +31,6 @@
u32 internal_lbasize;
};
-static int nd_blk_major;
-
static u32 nd_blk_meta_size(struct nd_blk_device *blk_dev)
{
return blk_dev->nsblk->lbasize - blk_dev->sector_size;
@@ -264,7 +262,6 @@
}
disk->driverfs_dev = &ndns->dev;
- disk->major = nd_blk_major;
disk->first_minor = 0;
disk->fops = &nd_blk_fops;
disk->private_data = blk_dev;
@@ -358,25 +355,12 @@
static int __init nd_blk_init(void)
{
- int rc;
-
- rc = register_blkdev(0, "nd_blk");
- if (rc < 0)
- return rc;
-
- nd_blk_major = rc;
- rc = nd_driver_register(&nd_blk_driver);
-
- if (rc < 0)
- unregister_blkdev(nd_blk_major, "nd_blk");
-
- return rc;
+ return nd_driver_register(&nd_blk_driver);
}
static void __exit nd_blk_exit(void)
{
driver_unregister(&nd_blk_driver.drv);
- unregister_blkdev(nd_blk_major, "nd_blk");
}
MODULE_AUTHOR("Ross Zwisler <ross.zwisler@linux.intel.com>");