[PATCH] clockevents: decrement reference count when device_register() fail

[Yangtao Li]

device_register() may fail, use put_device() giving up the refconut
to avoid refcount leak.

Signed-off-by: Yangtao Li <tiny.win...@gmail.com>
---
 kernel/time/clockevents.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 5e77662dd2d9..7b691dc97349 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -719,7 +719,9 @@ static __init int tick_broadcast_init_sysfs(void)
 {
        int err = device_register(&tick_bc_dev);
 
-       if (!err)
+       if (err)
+               put_device(&tick_bc_dev);
+       else
                err = device_create_file(&tick_bc_dev, 
&dev_attr_current_device);
        return err;
 }
@@ -746,8 +748,10 @@ static int __init tick_init_sysfs(void)
                        err = device_create_file(dev, &dev_attr_current_device);
                if (!err)
                        err = device_create_file(dev, &dev_attr_unbind_device);
-               if (err)
+               if (err) {
+                       put_device(dev);
                        return err;
+               }
        }
        return tick_broadcast_init_sysfs();
 }
-- 
2.17.0