[7/7] marvell-ccic: switch to resource managed allocation and request

Commit Message

Libin Yang June 4, 2013, 6:02 a.m. UTC

From: Libin Yang <[e-mail]>

This patch switchs to resource managed allocation and request in mmp-driver.
It can remove free resource operations.

Signed-off-by: Albert Wang <[e-mail]>
Signed-off-by: Libin Yang <[e-mail]>
Acked-by: Jonathan Corbet <[e-mail]>
---
 drivers/media/platform/marvell-ccic/mmp-driver.c |   60 ++++++++--------------
 1 file changed, 21 insertions(+), 39 deletions(-)

Patch

diff --git a/drivers/media/platform/marvell-ccic/mmp-driver.c b/drivers/media/platform/marvell-ccic/mmp-driver.c
index 2998477..6e4e682 100644
--- a/drivers/media/platform/marvell-ccic/mmp-driver.c
+++ b/drivers/media/platform/marvell-ccic/mmp-driver.c
@@ -352,7 +352,7 @@  static int mmpcam_probe(struct platform_device *pdev)
 	if (!pdata)
 		return -ENODEV;
 
-	cam = kzalloc(sizeof(*cam), GFP_KERNEL);
+	cam = devm_kzalloc(&pdev->dev, sizeof(*cam), GFP_KERNEL);
 	if (cam == NULL)
 		return -ENOMEM;
 	cam->pdev = pdev;
@@ -383,14 +383,12 @@  static int mmpcam_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res == NULL) {
 		dev_err(&pdev->dev, "no iomem resource!\n");
-		ret = -ENODEV;
-		goto out_free;
+		return -ENODEV;
 	}
-	mcam->regs = ioremap(res->start, resource_size(res));
+	mcam->regs = devm_request_and_ioremap(&pdev->dev, res);
 	if (mcam->regs == NULL) {
 		dev_err(&pdev->dev, "MMIO ioremap fail\n");
-		ret = -ENODEV;
-		goto out_free;
+		return -ENODEV;
 	}
 	/*
 	 * Power/clock memory is elsewhere; get it too.  Perhaps this
@@ -399,14 +397,12 @@  static int mmpcam_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (res == NULL) {
 		dev_err(&pdev->dev, "no power resource!\n");
-		ret = -ENODEV;
-		goto out_unmap1;
+		return -ENODEV;
 	}
-	cam->power_regs = ioremap(res->start, resource_size(res));
+	cam->power_regs = devm_request_and_ioremap(&pdev->dev, res);
 	if (cam->power_regs == NULL) {
 		dev_err(&pdev->dev, "power MMIO ioremap fail\n");
-		ret = -ENODEV;
-		goto out_unmap1;
+		return -ENODEV;
 	}
 
 	mcam_init_clk(mcam, pdata);
@@ -417,25 +413,28 @@  static int mmpcam_probe(struct platform_device *pdev)
 	 */
 	mcam->i2c_adapter = platform_get_drvdata(pdata->i2c_device);
 	if (mcam->i2c_adapter == NULL) {
-		ret = -ENODEV;
 		dev_err(&pdev->dev, "No i2c adapter\n");
-		goto out_unmap2;
+		return -ENODEV;
 	}
 	/*
 	 * Sensor GPIO pins.
 	 */
-	ret = gpio_request(pdata->sensor_power_gpio, "cam-power");
+	ret = devm_gpio_request(&pdev->dev, pdata->sensor_power_gpio,
+							"cam-power");
+
 	if (ret) {
 		dev_err(&pdev->dev, "Can't get sensor power gpio %d",
 				pdata->sensor_power_gpio);
-		goto out_unmap2;
+		return ret;
 	}
 	gpio_direction_output(pdata->sensor_power_gpio, 0);
-	ret = gpio_request(pdata->sensor_reset_gpio, "cam-reset");
+	ret = devm_gpio_request(&pdev->dev, pdata->sensor_reset_gpio,
+							"cam-reset");
+
 	if (ret) {
 		dev_err(&pdev->dev, "Can't get sensor reset gpio %d",
 				pdata->sensor_reset_gpio);
-		goto out_gpio;
+		return ret;
 	}
 	gpio_direction_output(pdata->sensor_reset_gpio, 0);
 	/*
@@ -443,10 +442,10 @@  static int mmpcam_probe(struct platform_device *pdev)
 	 */
 	ret = mmpcam_power_up(mcam);
 	if (ret)
-		goto out_gpio2;
+		goto out_power_down;
 	ret = mccic_register(mcam);
 	if (ret)
-		goto out_gpio2;
+		goto out_power_down;
 	/*
 	 * Finally, set up our IRQ now that the core is ready to
 	 * deal with it.
@@ -457,8 +456,8 @@  static int mmpcam_probe(struct platform_device *pdev)
 		goto out_unregister;
 	}
 	cam->irq = res->start;
-	ret = request_irq(cam->irq, mmpcam_irq, IRQF_SHARED,
-			"mmp-camera", mcam);
+	ret = devm_request_irq(&pdev->dev, cam->irq, mmpcam_irq, IRQF_SHARED,
+					"mmp-camera", mcam);
 	if (ret == 0) {
 		mmpcam_add_device(cam);
 		return 0;
@@ -466,17 +465,8 @@  static int mmpcam_probe(struct platform_device *pdev)
 
 out_unregister:
 	mccic_shutdown(mcam);
-out_gpio2:
+out_power_down:
 	mmpcam_power_down(mcam);
-	gpio_free(pdata->sensor_reset_gpio);
-out_gpio:
-	gpio_free(pdata->sensor_power_gpio);
-out_unmap2:
-	iounmap(cam->power_regs);
-out_unmap1:
-	iounmap(mcam->regs);
-out_free:
-	kfree(cam);
 	return ret;
 }
 
@@ -484,18 +474,10 @@  out_free:
 static int mmpcam_remove(struct mmp_camera *cam)
 {
 	struct mcam_camera *mcam = &cam->mcam;
-	struct mmp_camera_platform_data *pdata;
 
 	mmpcam_remove_device(cam);
-	free_irq(cam->irq, mcam);
 	mccic_shutdown(mcam);
 	mmpcam_power_down(mcam);
-	pdata = cam->pdev->dev.platform_data;
-	gpio_free(pdata->sensor_reset_gpio);
-	gpio_free(pdata->sensor_power_gpio);
-	iounmap(cam->power_regs);
-	iounmap(mcam->regs);
-	kfree(cam);
 	return 0;
 }