leds: trigger: pattern: Switch to using the new API kobj_to_dev()

Switch to using the new API kobj_to_dev() to fix the below warnning:
./drivers/leds/trigger/ledtrig-pattern.c:336:60-61: WARNING opportunity
for kobj_to_dev()

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

diff --git a/drivers/leds/trigger/ledtrig-pattern.c b/drivers/leds/trigger/ledtrig-pattern.c
index 4d138d5..43a265d 100644 (file)
--- a/drivers/leds/trigger/ledtrig-pattern.c
+++ b/drivers/leds/trigger/ledtrig-pattern.c
@@ -333,7 +333,7 @@ static DEVICE_ATTR_RW(hw_pattern);
 static umode_t pattern_trig_attrs_mode(struct kobject *kobj,
                                       struct attribute *attr, int index)
 {
-       struct device *dev = container_of(kobj, struct device, kobj);
+       struct device *dev = kobj_to_dev(kobj);
        struct led_classdev *led_cdev = dev_get_drvdata(dev);
 
        if (attr == &dev_attr_repeat.attr || attr == &dev_attr_pattern.attr)