Input: lm8333 - convert to use devm_* api

Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.

Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

Author: bbkzz

drivers/input/keyboard/lm8333.c

@@ -142,18 +142,18 @@ static int lm8333_probe(struct i2c_client *client)
 		return -EINVAL;
 	}
 
-	lm8333 = kzalloc(sizeof(*lm8333), GFP_KERNEL);
-	input = input_allocate_device();
-	if (!lm8333 || !input) {
-		err = -ENOMEM;
-		goto free_mem;
-	}
+	lm8333 = devm_kzalloc(&client->dev, sizeof(*lm8333), GFP_KERNEL);
+	if (!lm8333)
+		return -ENOMEM;
+
+	input = devm_input_allocate_device(&client->dev);
+	if (!input)
+		return -ENOMEM;
 
 	lm8333->client = client;
 	lm8333->input = input;
 
 	input->name = client->name;
-	input->dev.parent = &client->dev;
 	input->id.bustype = BUS_I2C;
 
 	input_set_capability(input, EV_MSC, MSC_SCAN);
@@ -162,7 +162,7 @@ static int lm8333_probe(struct i2c_client *client)
 					 LM8333_NUM_ROWS, LM8333_NUM_COLS,
 					 lm8333->keycodes, input);
 	if (err)
-		goto free_mem;
+		return err;
 
 	if (pdata->debounce_time) {
 		err = lm8333_write8(lm8333, LM8333_DEBOUNCE,
@@ -178,34 +178,19 @@ static int lm8333_probe(struct i2c_client *client)
 			dev_warn(&client->dev, "Unable to set active time\n");
 	}
 
-	err = request_threaded_irq(client->irq, NULL, lm8333_irq_thread,
-				   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-				   "lm8333", lm8333);
+	err = devm_request_threaded_irq(&client->dev, client->irq,
+					NULL, lm8333_irq_thread,
+					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					"lm8333", lm8333);
 	if (err)
-		goto free_mem;
+		return err;
 
 	err = input_register_device(input);
 	if (err)
-		goto free_irq;
+		return err;
 
 	i2c_set_clientdata(client, lm8333);
 	return 0;
-
- free_irq:
-	free_irq(client->irq, lm8333);
- free_mem:
-	input_free_device(input);
-	kfree(lm8333);
-	return err;
-}
-
-static void lm8333_remove(struct i2c_client *client)
-{
-	struct lm8333 *lm8333 = i2c_get_clientdata(client);
-
-	free_irq(client->irq, lm8333);
-	input_unregister_device(lm8333->input);
-	kfree(lm8333);
 }
 
 static const struct i2c_device_id lm8333_id[] = {
@@ -219,7 +204,6 @@ static struct i2c_driver lm8333_driver = {
 		.name		= "lm8333",
 	},
 	.probe		= lm8333_probe,
-	.remove		= lm8333_remove,
 	.id_table	= lm8333_id,
 };
 module_i2c_driver(lm8333_driver);