linux-kernel - [PATCH] Input: da9052_onkey: convert to use devm

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Date:	Fri,  8 Aug 2014 12:48:44 +0530
From:	Kiran Padwal <kiran.padwal@...rtplayin.com>
To:	support.opensource@...semi.com, dmitry.torokhov@...il.com
Cc:	anthony.olech.opensource@...semi.com, david.chen@...semi.com,
	kiran.padwal21@...il.com, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Kiran Padwal <kiran.padwal@...rtplayin.com>
Subject: [PATCH] Input: da9052_onkey: convert to use devm_*

Converting to devm functions can make the code smaller and cleaner.

Signed-off-by: Kiran Padwal <kiran.padwal@...rtplayin.com>
---
 drivers/input/misc/da9052_onkey.c |   20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/input/misc/da9052_onkey.c b/drivers/input/misc/da9052_onkey.c
index 184c8f2..909441e 100644
--- a/drivers/input/misc/da9052_onkey.c
+++ b/drivers/input/misc/da9052_onkey.c
@@ -84,12 +84,14 @@ static int da9052_onkey_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	onkey = kzalloc(sizeof(*onkey), GFP_KERNEL);
-	input_dev = input_allocate_device();
-	if (!onkey || !input_dev) {
-		dev_err(&pdev->dev, "Failed to allocate memory\n");
-		error = -ENOMEM;
-		goto err_free_mem;
+	onkey = devm_kzalloc(&pdev->dev, sizeof(*onkey), GFP_KERNEL);
+	if (!onkey)
+		return -ENOMEM;
+
+	input_dev = devm_input_allocate_device(&pdev->dev);
+	if (!input_dev) {
+		dev_err(&pdev->dev, "Failed to allocate input device\n");
+		return -ENOMEM;
 	}
 
 	onkey->input = input_dev;
@@ -108,7 +110,7 @@ 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 +126,6 @@ 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;
 }
@@ -139,7 +138,6 @@ static int da9052_onkey_remove(struct platform_device *pdev)
 	cancel_delayed_work_sync(&onkey->work);
 
 	input_unregister_device(onkey->input);
-	kfree(onkey);
 
 	return 0;
 }
-- 
1.7.9.5

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