rtc: sysfs: use kobj_to_dev
use kobj_to_dev instead of open-conding it
Signed-off-by: suguosong <suguosong@xiaomi.com>
Link: https://lore.kernel.org/r/20200225021923.8570-1-guosongsu@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
diff --git a/drivers/rtc/sysfs.c b/drivers/rtc/sysfs.c
index b7ca7d7..950fac0 100644
--- a/drivers/rtc/sysfs.c
+++ b/drivers/rtc/sysfs.c
@@ -279,7 +279,7 @@ static bool rtc_does_wakealarm(struct rtc_device *rtc)
static umode_t rtc_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
- struct device *dev = container_of(kobj, struct device, kobj);
+ struct device *dev = kobj_to_dev(kobj);
struct rtc_device *rtc = to_rtc_device(dev);
umode_t mode = attr->mode;
