thermal/drivers/rockchip: Simplify clock logic

By using devm_clk_get_enabled() the clock acquisition and
enabling can be done in one step with automatic error
handling.

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230308112253.15659-3-sebastian.reichel@collabora.com

drivers/thermal/rockchip_thermal.c

@@ -1380,14 +1380,14 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
 		return error;
 	}
 
-	thermal->clk = devm_clk_get(&pdev->dev, "tsadc");
+	thermal->clk = devm_clk_get_enabled(&pdev->dev, "tsadc");
 	if (IS_ERR(thermal->clk)) {
 		error = PTR_ERR(thermal->clk);
 		dev_err(&pdev->dev, "failed to get tsadc clock: %d\n", error);
 		return error;
 	}
 
-	thermal->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
+	thermal->pclk = devm_clk_get_enabled(&pdev->dev, "apb_pclk");
 	if (IS_ERR(thermal->pclk)) {
 		error = PTR_ERR(thermal->pclk);
 		dev_err(&pdev->dev, "failed to get apb_pclk clock: %d\n",
@@ -1395,26 +1395,13 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
 		return error;
 	}
 
-	error = clk_prepare_enable(thermal->clk);
-	if (error) {
-		dev_err(&pdev->dev, "failed to enable converter clock: %d\n",
-			error);
-		return error;
-	}
-
-	error = clk_prepare_enable(thermal->pclk);
-	if (error) {
-		dev_err(&pdev->dev, "failed to enable pclk: %d\n", error);
-		goto err_disable_clk;
-	}
-
 	rockchip_thermal_reset_controller(thermal->reset);
 
 	error = rockchip_configure_from_dt(&pdev->dev, np, thermal);
 	if (error) {
 		dev_err(&pdev->dev, "failed to parse device tree data: %d\n",
 			error);
-		goto err_disable_pclk;
+		return error;
 	}
 
 	thermal->chip->initialize(thermal->grf, thermal->regs,
@@ -1428,7 +1415,7 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev,
 				"failed to register sensor[%d] : error = %d\n",
 				i, error);
-			goto err_disable_pclk;
+			return error;
 		}
 	}
 
@@ -1439,7 +1426,7 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
 	if (error) {
 		dev_err(&pdev->dev,
 			"failed to request tsadc irq: %d\n", error);
-		goto err_disable_pclk;
+		return error;
 	}
 
 	thermal->chip->control(thermal->regs, true);
@@ -1456,13 +1443,6 @@ static int rockchip_thermal_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, thermal);
 
 	return 0;
-
-err_disable_pclk:
-	clk_disable_unprepare(thermal->pclk);
-err_disable_clk:
-	clk_disable_unprepare(thermal->clk);
-
-	return error;
 }
 
 static int rockchip_thermal_remove(struct platform_device *pdev)
@@ -1479,9 +1459,6 @@ static int rockchip_thermal_remove(struct platform_device *pdev)
 
 	thermal->chip->control(thermal->regs, false);
 
-	clk_disable_unprepare(thermal->pclk);
-	clk_disable_unprepare(thermal->clk);
-
 	return 0;
 }