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

[Chen-Yu Tsai]

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@xxxxxxxxxxxx>
---
 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
 
-- 
2.53.0.1018.g2bb0e51243-goog