drm/mediatek: Return error if MDP RDMA failed to enable the clock

Return the result of clk_prepare_enable() instead of
always returns 0.

Fixes: f8946e2b6bb2 ("drm/mediatek: Add display MDP RDMA support for MT8195")
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231214055847.4936-21-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

diff --git a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
index dc7c9e991990826412f3012a047dc0f4e1642a4e..ee9ce9b6d078640aa3b600bb6cd02337f174f959 100644 (file)
--- a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
@@ -262,8 +262,7 @@ int mtk_mdp_rdma_clk_enable(struct device *dev)
 {
        struct mtk_mdp_rdma *rdma = dev_get_drvdata(dev);
 
-       clk_prepare_enable(rdma->clk);
-       return 0;
+       return clk_prepare_enable(rdma->clk);
 }
 
 void mtk_mdp_rdma_clk_disable(struct device *dev)