linux-kernel - [PATCH 3/3] drm/mediatek: Use devm variant for pm_runtime

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Message-Id: <20230608101209.126499-4-angelogioacchino.delregno@collabora.com>
Date:   Thu,  8 Jun 2023 12:12:09 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     chunkuang.hu@...nel.org
Cc:     p.zabel@...gutronix.de, airlied@...il.com, daniel@...ll.ch,
        matthias.bgg@...il.com, angelogioacchino.delregno@...labora.com,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kernel@...labora.com
Subject: [PATCH 3/3] drm/mediatek: Use devm variant for pm_runtime_enable() when possible

Simplify the error path of return functions and drop the call to
pm_runtime_disable() in remove functions by switching to
devm_pm_runtime_enable() where possible.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c |  9 ++++-----
 drivers/gpu/drm/mediatek/mtk_disp_rdma.c        | 11 ++++-------
 drivers/gpu/drm/mediatek/mtk_mdp_rdma.c         | 10 +++++-----
 3 files changed, 13 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
index 1993b688befa..14e8ad6c78c3 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -519,13 +519,13 @@ static int mtk_disp_ovl_adaptor_probe(struct platform_device *pdev)
 
 	component_master_add_with_match(dev, &mtk_disp_ovl_adaptor_master_ops, match);
 
-	pm_runtime_enable(dev);
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return ret;
 
 	ret = component_add(dev, &mtk_disp_ovl_adaptor_comp_ops);
-	if (ret) {
-		pm_runtime_disable(dev);
+	if (ret)
 		return dev_err_probe(dev, ret, "Failed to add component\n");
-	}
 
 	return 0;
 }
@@ -533,7 +533,6 @@ static int mtk_disp_ovl_adaptor_probe(struct platform_device *pdev)
 static int mtk_disp_ovl_adaptor_remove(struct platform_device *pdev)
 {
 	component_master_del(&pdev->dev, &mtk_disp_ovl_adaptor_master_ops);
-	pm_runtime_disable(&pdev->dev);
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
index 307be35b59fc..5e90b6d593f5 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
@@ -361,13 +361,13 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, priv);
 
-	pm_runtime_enable(dev);
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return ret;
 
 	ret = component_add(dev, &mtk_disp_rdma_component_ops);
-	if (ret) {
-		pm_runtime_disable(dev);
+	if (ret)
 		return dev_err_probe(dev, ret, "Failed to add component\n");
-	}
 
 	return 0;
 }
@@ -375,9 +375,6 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
 static int mtk_disp_rdma_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &mtk_disp_rdma_component_ops);
-
-	pm_runtime_disable(&pdev->dev);
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
index ed519b5a3273..93ef05ec9720 100644
--- a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
@@ -300,20 +300,20 @@ static int mtk_mdp_rdma_probe(struct platform_device *pdev)
 #endif
 	platform_set_drvdata(pdev, priv);
 
-	pm_runtime_enable(dev);
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return ret;
 
 	ret = component_add(dev, &mtk_mdp_rdma_component_ops);
-	if (ret) {
-		pm_runtime_disable(dev);
+	if (ret)
 		return dev_err_probe(dev, ret, "Failed to add component\n");
-	}
+
 	return 0;
 }
 
 static int mtk_mdp_rdma_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &mtk_mdp_rdma_component_ops);
-	pm_runtime_disable(&pdev->dev);
 	return 0;
 }
 
-- 
2.40.1