Merge branch 'master'

1 files changed, 2 insertions, 0 deletions

diff --git a/block/genhd.c b/block/genhd.c
index 5a8d3bf02f17..d96572589621 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -182,6 +182,7 @@ static int exact_lock(dev_t dev, void *data)
  */
 void add_disk(struct gendisk *disk)
 {
+        get_device(disk->driverfs_dev);
         disk->flags |= GENHD_FL_UP;
         blk_register_region(MKDEV(disk->major, disk->first_minor),
                             disk->minors, NULL, exact_match, exact_lock, disk);
@@ -427,6 +428,7 @@ static struct attribute * default_attrs[] = {
 static void disk_release(struct kobject * kobj)
 {
         struct gendisk *disk = to_disk(kobj);
+        put_device(disk->driverfs_dev);
         kfree(disk->random);
         kfree(disk->part);
         free_disk_stats(disk);