power-supply: use kobj_to_dev()

Use kobj_to_dev() instead of open-coding it

Signed-off-by: Jian Dong <dongjian@yulong.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/drivers/power/supply/ds2760_battery.c b/drivers/power/supply/ds2760_battery.c
index 695bb67..5f50da5 100644 (file)
--- a/drivers/power/supply/ds2760_battery.c
+++ b/drivers/power/supply/ds2760_battery.c
@@ -198,7 +198,7 @@ static ssize_t w1_slave_read(struct file *filp, struct kobject *kobj,
                             struct bin_attribute *bin_attr, char *buf,
                             loff_t off, size_t count)
 {
-       struct device *dev = container_of(kobj, struct device, kobj);
+       struct device *dev = kobj_to_dev(kobj);
        return w1_ds2760_read(dev, buf, off, count);
 }