1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index 0ff11d6f8158..17ffa8d671a7 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -47,7 +47,7 @@ struct mapped_device;
 int dm_create(struct mapped_device **md);
 int dm_create_with_minor(unsigned int minor, struct mapped_device **md);
 void dm_set_mdptr(struct mapped_device *md, void *ptr);
-void *dm_get_mdptr(dev_t dev);
+void *dm_get_mdptr(struct mapped_device *md);
 struct mapped_device *dm_get_md(dev_t dev);
 
 /*