Re: [PATCH] drm/exynos/dma: Drop iommu_dma_init_domain() stub

[Marek Szyprowski <m.szyprowski@samsung.com>]

On 26.03.2026 10:30, Chen-Yu Tsai wrote:
> Commit 1feda5eb77fc ("drm/exynos: Use selected dma_dev default iommu
> domain instead of a fake one") removed the code around creating a
> custom IOMMU domain, but forgot to remove the stub.
>
> Remove the iommu_dma_init_domain() stub as the function is no longer
> referenced, and was also made private to the IOMMU DMA code.
>
> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>

Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>

> ---
>  drivers/gpu/drm/exynos/exynos_drm_dma.c | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_dma.c b/drivers/gpu/drm/exynos/exynos_drm_dma.c
> index 6a6761935224..ccc6b852ee7d 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_dma.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_dma.c
> @@ -23,10 +23,6 @@
>  #define to_dma_iommu_mapping(dev) NULL
>  #endif
>  
> -#if !defined(CONFIG_IOMMU_DMA)
> -#define iommu_dma_init_domain(...) ({ -EINVAL; })
> -#endif
> -
>  #define EXYNOS_DEV_ADDR_START	0x20000000
>  #define EXYNOS_DEV_ADDR_SIZE	0x40000000
>  

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