This patch switchs to resource managed allocation and request in mmp-driver.
It can remove free resource operations.
Signed-off-by: Albert Wang <twang13@xxxxxxxxxxx>
Signed-off-by: Libin Yang <lbyang@xxxxxxxxxxx>
Acked-by: Jonathan Corbet <corbet@xxxxxxx>
---
drivers/media/platform/marvell-ccic/mmp-driver.c | 65 ++++++++--------------
1 file changed, 22 insertions(+), 43 deletions(-)
diff --git a/drivers/media/platform/marvell-ccic/mmp-driver.c b/drivers/media/platform/marvell-ccic/mmp-driver.c
index 818abf3..d355840 100755
--- a/drivers/media/platform/marvell-ccic/mmp-driver.c
+++ b/drivers/media/platform/marvell-ccic/mmp-driver.c
@@ -342,7 +342,7 @@ 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;
@@ -359,10 +359,9 @@ static int mmpcam_probe(struct platform_device *pdev)
mcam->bus_type = pdata->bus_type;
mcam->dphy = pdata->dphy;
/* mosetly it won't happen. dphy is an array in pdata, but in case .. */
- if (unlikely(mcam->dphy == NULL)) {
- ret = -EINVAL;
- goto out_free;
- }
+ if (unlikely(mcam->dphy == NULL))
+ return -EINVAL;
+
mcam->mipi_enabled = 0;
mcam->lane = pdata->lane;
mcam->chip_id = V4L2_IDENT_ARMADA610;
@@ -374,14 +373,12 @@ 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
@@ -390,44 +387,43 @@ 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;
}
ret = mcam_init_clk(mcam, pdata);
if (ret)
- goto out_unmap2;
+ return ret;
/*
* Find the i2c adapter. This assumes, of course, that the
* i2c bus is already up and functioning.
*/
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);
/*
@@ -436,7 +432,7 @@ static int mmpcam_probe(struct platform_device *pdev)
mmpcam_power_up(mcam);
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.
@@ -447,8 +443,8 @@ 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;
@@ -456,17 +452,8 @@ 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;
}
@@ -474,18 +461,10 @@ 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;
}
--
1.7.9.5
--
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