linux-kernel - [PATCH 1/3] pwm: imx-tpm: Use dev_err_probe() to simplify error handling

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Date:   Tue, 11 Aug 2020 11:23:42 +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 1/3] pwm: imx-tpm: 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-imx-tpm.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/pwm/pwm-imx-tpm.c b/drivers/pwm/pwm-imx-tpm.c
index fcdf6be..e46fad3 100644
--- a/drivers/pwm/pwm-imx-tpm.c
+++ b/drivers/pwm/pwm-imx-tpm.c
@@ -350,13 +350,9 @@ static int pwm_imx_tpm_probe(struct platform_device *pdev)
 		return PTR_ERR(tpm->base);
 
 	tpm->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(tpm->clk)) {
-		ret = PTR_ERR(tpm->clk);
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev,
-				"failed to get PWM clock: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(tpm->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(tpm->clk),
+				     "failed to get PWM clock: %ld\n", PTR_ERR(tpm->clk));
 
 	ret = clk_prepare_enable(tpm->clk);
 	if (ret) {
-- 
2.7.4