linux-kernel - [PATCH 2/3] pwm: imx27: Use dev_err_probe() to simplify error handling

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Date:   Tue, 11 Aug 2020 11:23:43 +0800
From:   Anson Huang <Anson.Huang@....com>
To:     thierry.reding@...il.com, u.kleine-koenig@...gutronix.de,
        lee.jones@...aro.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com,
        linux-pwm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH 2/3] pwm: imx27: Use dev_err_probe() to simplify error handling

dev_err_probe() can reduce code size, uniform error handling and record the
defer probe reason etc., use it to simplify the code.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 drivers/pwm/pwm-imx27.c | 27 ++++++++-------------------
 1 file changed, 8 insertions(+), 19 deletions(-)

diff --git a/drivers/pwm/pwm-imx27.c b/drivers/pwm/pwm-imx27.c
index c50d453..fabd30d1 100644
--- a/drivers/pwm/pwm-imx27.c
+++ b/drivers/pwm/pwm-imx27.c
@@ -315,27 +315,16 @@ static int pwm_imx27_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, imx);
 
 	imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
-	if (IS_ERR(imx->clk_ipg)) {
-		int ret = PTR_ERR(imx->clk_ipg);
-
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev,
-				"getting ipg clock failed with %d\n",
-				ret);
-		return ret;
-	}
+	if (IS_ERR(imx->clk_ipg))
+		return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_ipg),
+				     "getting ipg clock failed with %ld\n",
+				     PTR_ERR(imx->clk_ipg));
 
 	imx->clk_per = devm_clk_get(&pdev->dev, "per");
-	if (IS_ERR(imx->clk_per)) {
-		int ret = PTR_ERR(imx->clk_per);
-
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev,
-				"failed to get peripheral clock: %d\n",
-				ret);
-
-		return ret;
-	}
+	if (IS_ERR(imx->clk_per))
+		return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_per),
+				     "failed to get peripheral clock: %ld\n",
+				     PTR_ERR(imx->clk_per));
 
 	imx->chip.ops = &pwm_imx27_ops;
 	imx->chip.dev = &pdev->dev;
-- 
2.7.4