leds: convert LP5521 LED driver to devm_kzalloc() and cleanup error exit path

Signed-off-by: Bryan Wu <bryan.wu@canonical.com>

diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 23815624f35ef59ea11d6cfe167e173257c548c2..2064aefedc0707fd7a6d78e85ded09dd441113a0 100644 (file)
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -744,7 +744,7 @@ static int __devinit lp5521_probe(struct i2c_client *client,
        int ret, i, led;
        u8 buf;
 
-       chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+       chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
        if (!chip)
                return -ENOMEM;
 
@@ -755,8 +755,7 @@ static int __devinit lp5521_probe(struct i2c_client *client,
 
        if (!pdata) {
                dev_err(&client->dev, "no platform data\n");
-               ret = -EINVAL;
-               goto fail1;
+               return -EINVAL;
        }
 
        mutex_init(&chip->lock);
@@ -766,7 +765,7 @@ static int __devinit lp5521_probe(struct i2c_client *client,
        if (pdata->setup_resources) {
                ret = pdata->setup_resources();
                if (ret < 0)
-                       goto fail1;
+                       return ret;
        }
 
        if (pdata->enable) {
@@ -807,7 +806,7 @@ static int __devinit lp5521_probe(struct i2c_client *client,
        ret = lp5521_configure(client);
        if (ret < 0) {
                dev_err(&client->dev, "error configuring chip\n");
-               goto fail2;
+               goto fail1;
        }
 
        /* Initialize leds */
@@ -822,7 +821,7 @@ static int __devinit lp5521_probe(struct i2c_client *client,
                ret = lp5521_init_led(&chip->leds[led], client, i, pdata);
                if (ret) {
                        dev_err(&client->dev, "error initializing leds\n");
-                       goto fail3;
+                       goto fail2;
                }
                chip->num_leds++;
 
@@ -840,21 +839,19 @@ static int __devinit lp5521_probe(struct i2c_client *client,
        ret = lp5521_register_sysfs(client);
        if (ret) {
                dev_err(&client->dev, "registering sysfs failed\n");
-               goto fail3;
+               goto fail2;
        }
        return ret;
-fail3:
+fail2:
        for (i = 0; i < chip->num_leds; i++) {
                led_classdev_unregister(&chip->leds[i].cdev);
                cancel_work_sync(&chip->leds[i].brightness_work);
        }
-fail2:
+fail1:
        if (pdata->enable)
                pdata->enable(0);
        if (pdata->release_resources)
                pdata->release_resources();
-fail1:
-       kfree(chip);
        return ret;
 }
 
@@ -875,7 +872,6 @@ static int __devexit lp5521_remove(struct i2c_client *client)
                chip->pdata->enable(0);
        if (chip->pdata->release_resources)
                chip->pdata->release_resources();
-       kfree(chip);
        return 0;
 }