[PATCH] Fix device_attribute memory leak in device_del

dev->devt_attr is allocated in device_add() but it is never freed in
device_del() in the drivers/base/core.c file (reported by kmemleak).

Signed-off-by: Catalin Marinas <catalin.marinas@gmail.com>
Acked-by: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 68ad11af22b4..002fde46d38d 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -591,8 +591,10 @@ void device_del(struct device * dev)
 
         if (parent)
                 klist_del(&dev->knode_parent);
-        if (dev->devt_attr)
+        if (dev->devt_attr) {
                 device_remove_file(dev, dev->devt_attr);
+                kfree(dev->devt_attr);
+        }
         if (dev->class) {
                 sysfs_remove_link(&dev->kobj, "subsystem");
                 sysfs_remove_link(&dev->class->subsys.kset.kobj, dev->bus_id);