1 files changed, 16 insertions, 33 deletions

diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 7ac78c13dd1c..85237cf661f9 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -155,11 +155,10 @@ static void vol_release(struct device *dev)
  */
 int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
 {
-	int i, err, vol_id = req->vol_id, do_free = 1;
+	int i, err, vol_id = req->vol_id;
 	struct ubi_volume *vol;
 	struct ubi_vtbl_record vtbl_rec;
 	struct ubi_eba_table *eba_tbl = NULL;
-	dev_t dev;
 
 	if (ubi->ro_mode)
 		return -EROFS;
@@ -168,6 +167,12 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
 	if (!vol)
 		return -ENOMEM;
 
+	device_initialize(&vol->dev);
+	vol->dev.release = vol_release;
+	vol->dev.parent = &ubi->dev;
+	vol->dev.class = &ubi_class;
+	vol->dev.groups = volume_dev_groups;
+
 	spin_lock(&ubi->volumes_lock);
 	if (vol_id == UBI_VOL_NUM_AUTO) {
 		/* Find unused volume ID */
@@ -268,24 +273,13 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
 	/* Register character device for the volume */
 	cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
 	vol->cdev.owner = THIS_MODULE;
-	dev = MKDEV(MAJOR(ubi->cdev.dev), vol_id + 1);
-	err = cdev_add(&vol->cdev, dev, 1);
-	if (err) {
-		ubi_err(ubi, "cannot add character device");
-		goto out_mapping;
-	}
-
-	vol->dev.release = vol_release;
-	vol->dev.parent = &ubi->dev;
-	vol->dev.devt = dev;
-	vol->dev.class = &ubi_class;
-	vol->dev.groups = volume_dev_groups;
 
+	vol->dev.devt = MKDEV(MAJOR(ubi->cdev.dev), vol_id + 1);
 	dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
-	err = device_register(&vol->dev);
+	err = cdev_device_add(&vol->cdev, &vol->dev);
 	if (err) {
-		ubi_err(ubi, "cannot register device");
-		goto out_cdev;
+		ubi_err(ubi, "cannot add device");
+		goto out_mapping;
 	}
 
 	/* Fill volume table record */
@@ -318,28 +312,17 @@ out_sysfs:
 	 * We have registered our device, we should not free the volume
 	 * description object in this function in case of an error - it is
 	 * freed by the release function.
-	 *
-	 * Get device reference to prevent the release function from being
-	 * called just after sysfs has been closed.
 	 */
-	do_free = 0;
-	get_device(&vol->dev);
-	device_unregister(&vol->dev);
-out_cdev:
-	cdev_del(&vol->cdev);
+	cdev_device_del(&vol->cdev, &vol->dev);
 out_mapping:
-	if (do_free)
-		ubi_eba_destroy_table(eba_tbl);
+	ubi_eba_destroy_table(eba_tbl);
 out_acc:
 	spin_lock(&ubi->volumes_lock);
 	ubi->rsvd_pebs -= vol->reserved_pebs;
 	ubi->avail_pebs += vol->reserved_pebs;
 out_unlock:
 	spin_unlock(&ubi->volumes_lock);
-	if (do_free)
-		kfree(vol);
-	else
-		put_device(&vol->dev);
+	put_device(&vol->dev);
 	ubi_err(ubi, "cannot create volume %d, error %d", vol_id, err);
 	return err;
 }
@@ -391,8 +374,8 @@ int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl)
 			goto out_err;
 	}
 
-	cdev_del(&vol->cdev);
-	device_unregister(&vol->dev);
+	cdev_device_del(&vol->cdev, &vol->dev);
+	put_device(&vol->dev);
 
 	spin_lock(&ubi->volumes_lock);
 	ubi->rsvd_pebs -= reserved_pebs;