2016-03-02 10:11:12

by Dan Carpenter

Subject: [patch] iommu/exynos: checking for IS_ERR() instead of NULL

of_platform_device_create() returns NULL on error, it never returns
error pointers.

Fixes: 8ed55c812fa8 ('iommu/exynos: Init from dt-specific callback instead of initcall')
Signed-off-by: Dan Carpenter <[email protected]>

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index b066504..cb57bda 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -1347,8 +1347,8 @@ static int __init exynos_iommu_of_setup(struct device_node *np)
exynos_iommu_init();

pdev = of_platform_device_create(np, NULL, platform_bus_type.dev_root);
- if (IS_ERR(pdev))
- return PTR_ERR(pdev);
+ if (!pdev)
+ return -ENOMEM;

/*
* use the first registered sysmmu device for performing

2016-03-02 12:47:43

by Marek Szyprowski

Subject: Re: [patch] iommu/exynos: checking for IS_ERR() instead of NULL

Hello,

On 2016-03-02 11:10, Dan Carpenter wrote:
> of_platform_device_create() returns NULL on error, it never returns
> error pointers.
>
> Fixes: 8ed55c812fa8 ('iommu/exynos: Init from dt-specific callback instead of initcall')
> Signed-off-by: Dan Carpenter <[email protected]>

Acked-by: Marek Szyprowski <[email protected]>

> diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
> index b066504..cb57bda 100644
> --- a/drivers/iommu/exynos-iommu.c
> +++ b/drivers/iommu/exynos-iommu.c
> @@ -1347,8 +1347,8 @@ static int __init exynos_iommu_of_setup(struct device_node *np)
> exynos_iommu_init();
>
> pdev = of_platform_device_create(np, NULL, platform_bus_type.dev_root);
> - if (IS_ERR(pdev))
> - return PTR_ERR(pdev);
> + if (!pdev)
> + return -ENOMEM;
>
> /*
> * use the first registered sysmmu device for performing
>
>

Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland

2016-03-02 14:54:00

by Joerg Roedel

Subject: Re: [patch] iommu/exynos: checking for IS_ERR() instead of NULL

On Wed, Mar 02, 2016 at 01:10:47PM +0300, Dan Carpenter wrote:
> of_platform_device_create() returns NULL on error, it never returns
> error pointers.
>
> Fixes: 8ed55c812fa8 ('iommu/exynos: Init from dt-specific callback instead of initcall')
> Signed-off-by: Dan Carpenter <[email protected]>

Applied, thanks.