[PATCH] drm/exynos: fix to detach device of iommu

[Inki Dae]

Merged.

Thanks,
Inki Dae


2015년 10월 02일 09:30에 Joonyoung Shim 이(가) 쓴 글:
> The arm_iommu_detach_device() is a function to detach device of iommu
> attached by arm_iommu_attach_device(). The exynos-drm uses
> arm_iommu_attach_device() so it should use arm_iommu_detach_device() to
> detach device of iommu, not iommu_detach_device().
>
> The drm_release_iommu_mapping() is a function to release mapping of
> iommu created by arm_iommu_create_mapping(). It is called by
> exynos_drm_unload() so shouldn't be called by drm_iommu_detach_device().
>
> Signed-off-by: Joonyoung Shim <jy0922.shim at samsung.com>
> Cc: <stable at vger.kernel.org> # v3.8+
> ---
>   drivers/gpu/drm/exynos/exynos_drm_iommu.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c 
> b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
> index 055e8ec..d73b9ad 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_iommu.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
> @@ -139,6 +139,5 @@ void drm_iommu_detach_device(struct drm_device *drm_dev,
>       if (!mapping || !mapping->domain)
>               return;
>
> -     iommu_detach_device(mapping->domain, subdrv_dev);
> -     drm_release_iommu_mapping(drm_dev);
> +     arm_iommu_detach_device(subdrv_dev);
>   }
>