Subject: [PATCHv2 01/16] iommu/omap: convert to devm_* interfaces

From: [email-masked] (Laurent Pinchart)
Date: Tue, 25 Feb 2014 22:10:46 +0100

Hi Suman,

Thank you for the patch.

On Thursday 13 February 2014 12:15:32 Suman Anna wrote:
> Use the various devm_ interfaces to simplify the cleanup in
> probe and remove functions.
> 
> Signed-off-by: Florian Vaussard <[email-masked]>
> Signed-off-by: Suman Anna <[email-masked]>

Acked-by: Laurent Pinchart <[email-masked]>

> ---
>  drivers/iommu/omap-iommu.c | 52  ++++++++----------------------------------
>  1 file changed, 10 insertions(+), 42 deletions(-)
> 
> diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
> index bcd78a7..fff2ffd 100644
> --- a/drivers/iommu/omap-iommu.c
> +++ b/drivers/iommu/omap-iommu.c
> @@ -941,7 +941,7 @@ static int omap_iommu_probe(struct platform_device
> *pdev) struct resource *res;
>  	struct iommu_platform_data *pdata = pdev->dev.platform_data;
> 
> -	obj = kzalloc(sizeof(*obj) + MMU_REG_SIZE, GFP_KERNEL);
> +	obj = devm_kzalloc(&pdev->dev, sizeof(*obj) + MMU_REG_SIZE, GFP_KERNEL);
>  	if (!obj)
>  		return -ENOMEM;
> 
> @@ -958,33 +958,18 @@ static int omap_iommu_probe(struct platform_device
> *pdev) INIT_LIST_HEAD(&obj->mmap);
> 
>  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!res) {
> -		err = -ENODEV;
> -		goto err_mem;
> -	}
> -
> -	res = request_mem_region(res->start, resource_size(res),
> -				 dev_name(&pdev->dev));
> -	if (!res) {
> -		err = -EIO;
> -		goto err_mem;
> -	}
> -
> -	obj->regbase = ioremap(res->start, resource_size(res));
> -	if (!obj->regbase) {
> -		err = -ENOMEM;
> -		goto err_ioremap;
> -	}
> +	obj->regbase = devm_ioremap_resource(obj->dev, res);
> +	if (IS_ERR(obj->regbase))
> +		return PTR_ERR(obj->regbase);
> 
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq < 0) {
> -		err = -ENODEV;
> -		goto err_irq;
> -	}
> -	err = request_irq(irq, iommu_fault_handler, IRQF_SHARED,
> -			  dev_name(&pdev->dev), obj);
> +	if (irq < 0)
> +		return -ENODEV;
> +
> +	err = devm_request_irq(obj->dev, irq, iommu_fault_handler, IRQF_SHARED,
> +			       dev_name(obj->dev), obj);
>  	if (err < 0)
> -		goto err_irq;
> +		return err;
>  	platform_set_drvdata(pdev, obj);
> 
>  	pm_runtime_irq_safe(obj->dev);
> @@ -992,34 +977,17 @@ static int omap_iommu_probe(struct platform_device
> *pdev)
> 
>  	dev_info(&pdev->dev, "%s registered\n", obj->name);
>  	return 0;
> -
> -err_irq:
> -	iounmap(obj->regbase);
> -err_ioremap:
> -	release_mem_region(res->start, resource_size(res));
> -err_mem:
> -	kfree(obj);
> -	return err;
>  }
> 
>  static int omap_iommu_remove(struct platform_device *pdev)
>  {
> -	int irq;
> -	struct resource *res;
>  	struct omap_iommu *obj = platform_get_drvdata(pdev);
> 
>  	iopgtable_clear_entry_all(obj);
> 
> -	irq = platform_get_irq(pdev, 0);
> -	free_irq(irq, obj);
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	release_mem_region(res->start, resource_size(res));
> -	iounmap(obj->regbase);
> -
>  	pm_runtime_disable(obj->dev);
> 
>  	dev_info(&pdev->dev, "%s removed\n", obj->name);
> -	kfree(obj);
>  	return 0;
>  }

-- 
Regards,

Laurent Pinchart