backlight: adp8860: use devm_ functions

The devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc of these functions.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
index 6c0951c..77d1fdb 100644 (file)
--- a/drivers/video/backlight/adp8860_bl.c
+++ b/drivers/video/backlight/adp8860_bl.c
@@ -222,7 +222,8 @@ static int __devinit adp8860_led_probe(struct i2c_client *client)
        struct led_info *cur_led;
        int ret, i;
 
-       led = kzalloc(sizeof(*led) * pdata->num_leds, GFP_KERNEL);
+       led = devm_kzalloc(&client->dev, sizeof(*led) * pdata->num_leds,
+                               GFP_KERNEL);
        if (led == NULL) {
                dev_err(&client->dev, "failed to alloc memory\n");
                return -ENOMEM;
@@ -236,7 +237,7 @@ static int __devinit adp8860_led_probe(struct i2c_client *client)
 
        if (ret) {
                dev_err(&client->dev, "failed to write\n");
-               goto err_free;
+               return ret;
        }
 
        for (i = 0; i < pdata->num_leds; ++i) {
@@ -291,9 +292,6 @@ static int __devinit adp8860_led_probe(struct i2c_client *client)
                cancel_work_sync(&led[i].work);
        }
 
- err_free:
-       kfree(led);
-
        return ret;
 }
 
@@ -309,7 +307,6 @@ static int __devexit adp8860_led_remove(struct i2c_client *client)
                cancel_work_sync(&data->led[i].work);
        }
 
-       kfree(data->led);
        return 0;
 }
 #else
@@ -675,13 +672,13 @@ static int __devinit adp8860_probe(struct i2c_client *client,
                return -EINVAL;
        }
 
-       data = kzalloc(sizeof(*data), GFP_KERNEL);
+       data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
        if (data == NULL)
                return -ENOMEM;
 
        ret = adp8860_read(client, ADP8860_MFDVID, &reg_val);
        if (ret < 0)
-               goto out2;
+               return ret;
 
        switch (ADP8860_MANID(reg_val)) {
        case ADP8863_MANUFID:
@@ -694,8 +691,7 @@ static int __devinit adp8860_probe(struct i2c_client *client,
                break;
        default:
                dev_err(&client->dev, "failed to probe\n");
-               ret = -ENODEV;
-               goto out2;
+               return -ENODEV;
        }
 
        /* It's confirmed that the DEVID field is actually a REVID */
@@ -717,8 +713,7 @@ static int __devinit adp8860_probe(struct i2c_client *client,
                        &client->dev, data, &adp8860_bl_ops, &props);
        if (IS_ERR(bl)) {
                dev_err(&client->dev, "failed to register backlight\n");
-               ret = PTR_ERR(bl);
-               goto out2;
+               return PTR_ERR(bl);
        }
 
        bl->props.brightness = ADP8860_MAX_BRIGHTNESS;
@@ -756,8 +751,6 @@ out:
                        &adp8860_bl_attr_group);
 out1:
        backlight_device_unregister(bl);
-out2:
-       kfree(data);
 
        return ret;
 }
@@ -776,7 +769,6 @@ static int __devexit adp8860_remove(struct i2c_client *client)
                        &adp8860_bl_attr_group);
 
        backlight_device_unregister(data->bl);
-       kfree(data);
 
        return 0;
 }