linux-kernel - [PATCH v3] pwm: rockchip: Convert to use dev_err

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Message-Id: <20220819070756.14895-1-zhaoxiao@uniontech.com>
Date:   Fri, 19 Aug 2022 15:07:56 +0800
From:   zhaoxiao <zhaoxiao@...ontech.com>
To:     thierry.reding@...il.com, heiko@...ech.de
Cc:     u.kleine-koenig@...gutronix.de, linux-pwm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        zhaoxiao <zhaoxiao@...ontech.com>
Subject: [PATCH v3] pwm: rockchip: Convert to use dev_err_probe()

It's fine to call dev_err_probe() in ->probe() when error code is known.
Convert the driver to use dev_err_probe().

Signed-off-by: zhaoxiao <zhaoxiao@...ontech.com>
---
 v3: 1.There is no need to assign it to 'ret', and use PTR_ERR(pc->pclk) directly.
     2.add the return before dev_err_probe().
 drivers/pwm/pwm-rockchip.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index f3647b317152..eda1bd49d260 100644
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -328,18 +328,12 @@ static int rockchip_pwm_probe(struct platform_device *pdev)
 	else
 		pc->pclk = pc->clk;
 
-	if (IS_ERR(pc->pclk)) {
-		ret = PTR_ERR(pc->pclk);
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev, "Can't get APB clk: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(pc->pclk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(pc->pclk), "Can't get APB clk\n");
 
 	ret = clk_prepare_enable(pc->clk);
-	if (ret) {
-		dev_err(&pdev->dev, "Can't prepare enable PWM clk: %d\n", ret);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "Can't prepare enable PWM clk\n");
 
 	ret = clk_prepare_enable(pc->pclk);
 	if (ret) {
-- 
2.20.1