linux-kernel - [PATCH] Input: da9052_onkey: Convert to managed resources

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Date:	Mon, 27 Jul 2015 08:26:17 +0530
From:	Vaishali Thakkar <vthakkar1994@...il.com>
To:	Support Opensource <support.opensource@...semi.com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Input: da9052_onkey: Convert to managed resources

Use managed resource functions devm_input_allocate_device and
devm_kzalloc. To be compatible with the change, replace various
gotos by direct returns and drop unneeded labels.

Signed-off-by: Vaishali Thakkar <vthakkar1994@...il.com>
---
 drivers/input/misc/da9052_onkey.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/input/misc/da9052_onkey.c b/drivers/input/misc/da9052_onkey.c
index 266e07f..3243fe9 100644
--- a/drivers/input/misc/da9052_onkey.c
+++ b/drivers/input/misc/da9052_onkey.c
@@ -84,12 +84,11 @@ static int da9052_onkey_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	onkey = kzalloc(sizeof(*onkey), GFP_KERNEL);
-	input_dev = input_allocate_device();
+	onkey = devm_kzalloc(&pdev->dev, sizeof(*onkey), GFP_KERNEL);
+	input_dev = devm_input_allocate_device(&pdev->dev);
 	if (!onkey || !input_dev) {
 		dev_err(&pdev->dev, "Failed to allocate memory\n");
-		error = -ENOMEM;
-		goto err_free_mem;
+		return -ENOMEM;
 	}
 
 	onkey->input = input_dev;
@@ -108,7 +107,7 @@ static int da9052_onkey_probe(struct platform_device *pdev)
 	if (error < 0) {
 		dev_err(onkey->da9052->dev,
 			"Failed to register ONKEY IRQ: %d\n", error);
-		goto err_free_mem;
+		return error;
 	}
 
 	error = input_register_device(onkey->input);
@@ -124,9 +123,6 @@ static int da9052_onkey_probe(struct platform_device *pdev)
 err_free_irq:
 	da9052_free_irq(onkey->da9052, DA9052_IRQ_NONKEY, onkey);
 	cancel_delayed_work_sync(&onkey->work);
-err_free_mem:
-	input_free_device(input_dev);
-	kfree(onkey);
 
 	return error;
 }
@@ -138,9 +134,6 @@ static int da9052_onkey_remove(struct platform_device *pdev)
 	da9052_free_irq(onkey->da9052, DA9052_IRQ_NONKEY, onkey);
 	cancel_delayed_work_sync(&onkey->work);
 
-	input_unregister_device(onkey->input);
-	kfree(onkey);
-
 	return 0;
 }
 
-- 
1.9.1

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