1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c
index 850706a5e553..7b039306037f 100644
--- a/drivers/misc/enclosure.c
+++ b/drivers/misc/enclosure.c
@@ -315,6 +315,9 @@ int enclosure_add_device(struct enclosure_device *edev, int component,
 
         cdev = &edev->component[component];
 
+        if (cdev->dev == dev)
+                return -EEXIST;
+
         if (cdev->dev)
                 enclosure_remove_links(cdev);