linux-kernel - [PATCH 1/4] iio: light: cm3605: Make use of the helper function dev_err

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Message-ID: <20210927083238.949-1-caihuoqing@baidu.com>
Date:   Mon, 27 Sep 2021 16:32:35 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Kevin Tsai <ktsai@...ellamicro.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/4] iio: light: cm3605: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/iio/light/cm3605.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/iio/light/cm3605.c b/drivers/iio/light/cm3605.c
index 4c83953672be..0b90564213e8 100644
--- a/drivers/iio/light/cm3605.c
+++ b/drivers/iio/light/cm3605.c
@@ -211,10 +211,10 @@ static int cm3605_probe(struct platform_device *pdev)
 	}
 
 	cm3605->vdd = devm_regulator_get(dev, "vdd");
-	if (IS_ERR(cm3605->vdd)) {
-		dev_err(dev, "failed to get VDD regulator\n");
-		return PTR_ERR(cm3605->vdd);
-	}
+	if (IS_ERR(cm3605->vdd))
+		return dev_err_probe(dev, PTR_ERR(cm3605->vdd),
+				     "failed to get VDD regulator\n");
+
 	ret = regulator_enable(cm3605->vdd);
 	if (ret) {
 		dev_err(dev, "failed to enable VDD regulator\n");
@@ -223,8 +223,7 @@ static int cm3605_probe(struct platform_device *pdev)
 
 	cm3605->aset = devm_gpiod_get(dev, "aset", GPIOD_OUT_HIGH);
 	if (IS_ERR(cm3605->aset)) {
-		dev_err(dev, "no ASET GPIO\n");
-		ret = PTR_ERR(cm3605->aset);
+		ret = dev_err_probe(dev, PTR_ERR(cm3605->aset), "no ASET GPIO\n");
 		goto out_disable_vdd;
 	}
 
-- 
2.25.1