[PATCH] drm/mediatek: Fix void-pointer-to-enum-cast warning

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1. Fix build warning message in mtk_disp_ovl_adaptor.c
>> drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c:415:10: warning: cast to smaller integer type 'enum mtk_ovl_adaptor_comp_type' from 'const void *' [-Wvoid-pointer-to-enum-cast]
                   type = (enum mtk_ovl_adaptor_comp_type)of_id->data;

                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                                1 warning generated.

2. Also fix the same warning message in mtk_drm_drv.c
>> drivers/gpu/drm/mediatek/mtk_drm_drv.c:832:15: warning: cast to smaller integer type 'enum mtk_ddp_comp_type' from 'const void *' [-Wvoid-pointer-to-enum-cast]
                   comp_type = (enum mtk_ddp_comp_type)of_id->data;

                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                                1 warning generated.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>
Fixes: 453c3364632a ("drm/mediatek: Add ovl_adaptor support for MT8195")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202305042054.ZtWME9OU-lkp@xxxxxxxxx/
---
 drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 2 +-
 drivers/gpu/drm/mediatek/mtk_drm_drv.c          | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
index c0a38f5217ee..081f0e681092 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -426,7 +426,7 @@ static int ovl_adaptor_comp_init(struct device *dev, struct component_match **ma
 			continue;
 		}
 
-		type = (enum mtk_ovl_adaptor_comp_type)of_id->data;
+		type = of_id->data;
 		id = ovl_adaptor_comp_get_id(dev, node, type);
 		if (id < 0) {
 			dev_warn(dev, "Skipping unknown component %pOF\n",
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 6dcb4ba2466c..4746cf95e0f2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -829,7 +829,7 @@ static int mtk_drm_probe(struct platform_device *pdev)
 			continue;
 		}
 
-		comp_type = (enum mtk_ddp_comp_type)of_id->data;
+		comp_type = of_id->data;
 
 		if (comp_type == MTK_DISP_MUTEX) {
 			int id;
-- 
2.18.0




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