backlight: lp855x: use devm_backlight_device_register()

Use devm_backlight_device_register() to make cleanup paths simpler.  Also,
unnecessary lp855x_backlight_unregister() is removed.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
index 57f005a9b475c419cc6100441168bce6ebcea0da..cae80d555e841fcd22dc844c9bf0d6fe12b87539 100644 (file)
--- a/drivers/video/backlight/lp855x_bl.c
+++ b/drivers/video/backlight/lp855x_bl.c
@@ -300,7 +300,7 @@ static int lp855x_backlight_register(struct lp855x *lp)
 
        props.brightness = pdata->initial_brightness;
 
-       bl = backlight_device_register(name, lp->dev, lp,
+       bl = devm_backlight_device_register(lp->dev, name, lp->dev, lp,
                                       &lp855x_bl_ops, &props);
        if (IS_ERR(bl))
                return PTR_ERR(bl);
@@ -310,12 +310,6 @@ static int lp855x_backlight_register(struct lp855x *lp)
        return 0;
 }
 
-static void lp855x_backlight_unregister(struct lp855x *lp)
-{
-       if (lp->bl)
-               backlight_device_unregister(lp->bl);
-}
-
 static ssize_t lp855x_get_chip_id(struct device *dev,
                                struct device_attribute *attr, char *buf)
 {
@@ -439,29 +433,24 @@ static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
        ret = lp855x_configure(lp);
        if (ret) {
                dev_err(lp->dev, "device config err: %d", ret);
-               goto err_dev;
+               return ret;
        }
 
        ret = lp855x_backlight_register(lp);
        if (ret) {
                dev_err(lp->dev,
                        "failed to register backlight. err: %d\n", ret);
-               goto err_dev;
+               return ret;
        }
 
        ret = sysfs_create_group(&lp->dev->kobj, &lp855x_attr_group);
        if (ret) {
                dev_err(lp->dev, "failed to register sysfs. err: %d\n", ret);
-               goto err_sysfs;
+               return ret;
        }
 
        backlight_update_status(lp->bl);
        return 0;
-
-err_sysfs:
-       lp855x_backlight_unregister(lp);
-err_dev:
-       return ret;
 }
 
 static int lp855x_remove(struct i2c_client *cl)
@@ -471,7 +460,6 @@ static int lp855x_remove(struct i2c_client *cl)
        lp->bl->props.brightness = 0;
        backlight_update_status(lp->bl);
        sysfs_remove_group(&lp->dev->kobj, &lp855x_attr_group);
-       lp855x_backlight_unregister(lp);
 
        return 0;
 }