Input: tps6507x-ts - update to devm_* API

Update the code to use devm_* API so that driver core will manage
resources.
Signed-off-by: NYegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/tps6507x-ts.c

@@ -226,7 +226,7 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
 	 */
 	init_data = tps_board->tps6507x_ts_init_data;
 
-	tsc = kzalloc(sizeof(struct tps6507x_ts), GFP_KERNEL);
+	tsc = devm_kzalloc(&pdev->dev, sizeof(struct tps6507x_ts), GFP_KERNEL);
 	if (!tsc) {
 		dev_err(tps6507x_dev->dev, "failed to allocate driver data\n");
 		return -ENOMEM;
@@ -240,11 +240,10 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
 	snprintf(tsc->phys, sizeof(tsc->phys),
 		 "%s/input0", dev_name(tsc->dev));
 
-	poll_dev = input_allocate_polled_device();
+	poll_dev = devm_input_allocate_polled_device(&pdev->dev);
 	if (!poll_dev) {
 		dev_err(tsc->dev, "Failed to allocate polled input device.\n");
-		error = -ENOMEM;
-		goto err_free_mem;
+		return -ENOMEM;
 	}
 
 	tsc->poll_dev = poll_dev;
@@ -274,32 +273,11 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
 
 	error = tps6507x_adc_standby(tsc);
 	if (error)
-		goto err_free_polled_dev;
+		return error;
 
 	error = input_register_polled_device(poll_dev);
 	if (error)
-		goto err_free_polled_dev;
-
-	platform_set_drvdata(pdev, tsc);
-
-	return 0;
-
-err_free_polled_dev:
-	input_free_polled_device(poll_dev);
-err_free_mem:
-	kfree(tsc);
 		return error;
-}
-
-static int tps6507x_ts_remove(struct platform_device *pdev)
-{
-	struct tps6507x_ts *tsc = platform_get_drvdata(pdev);
-	struct input_polled_dev *poll_dev = tsc->poll_dev;
-
-	input_unregister_polled_device(poll_dev);
-	input_free_polled_device(poll_dev);
-
-	kfree(tsc);
 
 	return 0;
 }
@@ -309,7 +287,6 @@ static struct platform_driver tps6507x_ts_driver = {
 		.name = "tps6507x-ts",
 	},
 	.probe = tps6507x_ts_probe,
-	.remove = tps6507x_ts_remove,
 };
 module_platform_driver(tps6507x_ts_driver);