linux-kernel - [PATCH] tvp7002: use devm_kzalloc() instead of kzalloc()

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Date:	Thu,  3 Jan 2013 18:52:42 +0530
From:	"Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:	LMML <linux-media@...r.kernel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	"Lad, Prabhakar" <prabhakar.lad@...com>,
	Manjunath Hadli <manjunath.hadli@...com>
Subject: [PATCH] tvp7002: use devm_kzalloc() instead of kzalloc()

I2C drivers can use devm_kzalloc() too in their .probe() methods. Doing so
simplifies their clean up paths.

Signed-off-by: Lad, Prabhakar <prabhakar.lad@...com>
Signed-off-by: Manjunath Hadli <manjunath.hadli@...com>
---
 drivers/media/i2c/tvp7002.c |   10 ++--------
 1 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c
index fb6a5b5..2d4c86e 100644
--- a/drivers/media/i2c/tvp7002.c
+++ b/drivers/media/i2c/tvp7002.c
@@ -1036,7 +1036,7 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
 		return -ENODEV;
 	}
 
-	device = kzalloc(sizeof(struct tvp7002), GFP_KERNEL);
+	device = devm_kzalloc(&c->dev, sizeof(struct tvp7002), GFP_KERNEL);
 
 	if (!device)
 		return -ENOMEM;
@@ -1088,17 +1088,12 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
 			V4L2_CID_GAIN, 0, 255, 1, 0);
 	sd->ctrl_handler = &device->hdl;
 	if (device->hdl.error) {
-		int err = device->hdl.error;
-
 		v4l2_ctrl_handler_free(&device->hdl);
-		kfree(device);
-		return err;
+		return device->hdl.error;
 	}
 	v4l2_ctrl_handler_setup(&device->hdl);
 
 found_error:
-	if (error < 0)
-		kfree(device);
 
 	return error;
 }
@@ -1120,7 +1115,6 @@ static int tvp7002_remove(struct i2c_client *c)
 
 	v4l2_device_unregister_subdev(sd);
 	v4l2_ctrl_handler_free(&device->hdl);
-	kfree(device);
 	return 0;
 }
 
-- 
1.7.4.1

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