drm/mediatek: Omit warning on probe defers

It can happen that the mmsys clock drivers aren't probed before the
platform driver gets invoked. The platform driver used to print a warning
that the driver failed to get the clocks. Omit this error on
the defered probe path.
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

drivers/gpu/drm/mediatek/mtk_disp_color.c

@@ -119,7 +119,10 @@ static int mtk_disp_color_probe(struct platform_device *pdev)
 	ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
 				&mtk_disp_color_funcs);
 	if (ret) {
-		dev_err(dev, "Failed to initialize component: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to initialize component: %d\n",
+				ret);
+
 		return ret;
 	}
 

drivers/gpu/drm/mediatek/mtk_disp_ovl.c

@@ -386,7 +386,10 @@ static int mtk_disp_ovl_probe(struct platform_device *pdev)
 	ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
 				&mtk_disp_ovl_funcs);
 	if (ret) {
-		dev_err(dev, "Failed to initialize component: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to initialize component: %d\n",
+				ret);
+
 		return ret;
 	}
 

drivers/gpu/drm/mediatek/mtk_disp_rdma.c

@@ -294,7 +294,10 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
 	ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
 				&mtk_disp_rdma_funcs);
 	if (ret) {
-		dev_err(dev, "Failed to initialize component: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to initialize component: %d\n",
+				ret);
+
 		return ret;
 	}
 

drivers/gpu/drm/mediatek/mtk_dpi.c

@@ -716,21 +716,27 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 	dpi->engine_clk = devm_clk_get(dev, "engine");
 	if (IS_ERR(dpi->engine_clk)) {
 		ret = PTR_ERR(dpi->engine_clk);
-		dev_err(dev, "Failed to get engine clock: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get engine clock: %d\n", ret);
+
 		return ret;
 	}
 
 	dpi->pixel_clk = devm_clk_get(dev, "pixel");
 	if (IS_ERR(dpi->pixel_clk)) {
 		ret = PTR_ERR(dpi->pixel_clk);
-		dev_err(dev, "Failed to get pixel clock: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get pixel clock: %d\n", ret);
+
 		return ret;
 	}
 
 	dpi->tvd_clk = devm_clk_get(dev, "pll");
 	if (IS_ERR(dpi->tvd_clk)) {
 		ret = PTR_ERR(dpi->tvd_clk);
-		dev_err(dev, "Failed to get tvdpll clock: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get tvdpll clock: %d\n", ret);
+
 		return ret;
 	}
 

drivers/gpu/drm/mediatek/mtk_drm_ddp.c

@@ -628,7 +628,8 @@ static int mtk_ddp_probe(struct platform_device *pdev)
 	if (!ddp->data->no_clk) {
 		ddp->clk = devm_clk_get(dev, NULL);
 		if (IS_ERR(ddp->clk)) {
-			dev_err(dev, "Failed to get clock\n");
+			if (PTR_ERR(ddp->clk) != -EPROBE_DEFER)
+				dev_err(dev, "Failed to get clock\n");
 			return PTR_ERR(ddp->clk);
 		}
 	}

drivers/gpu/drm/mediatek/mtk_dsi.c

@@ -1194,14 +1194,18 @@ static int mtk_dsi_probe(struct platform_device *pdev)
 	dsi->engine_clk = devm_clk_get(dev, "engine");
 	if (IS_ERR(dsi->engine_clk)) {
 		ret = PTR_ERR(dsi->engine_clk);
-		dev_err(dev, "Failed to get engine clock: %d\n", ret);
+
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get engine clock: %d\n", ret);
 		goto err_unregister_host;
 	}
 
 	dsi->digital_clk = devm_clk_get(dev, "digital");
 	if (IS_ERR(dsi->digital_clk)) {
 		ret = PTR_ERR(dsi->digital_clk);
-		dev_err(dev, "Failed to get digital clock: %d\n", ret);
+
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get digital clock: %d\n", ret);
 		goto err_unregister_host;
 	}
 

drivers/gpu/drm/mediatek/mtk_hdmi.c

@@ -1474,7 +1474,9 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 
 	ret = mtk_hdmi_get_all_clk(hdmi, np);
 	if (ret) {
-		dev_err(dev, "Failed to get clocks: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "Failed to get clocks: %d\n", ret);
+
 		return ret;
 	}