linux-kernel - [PATCH v2 3/4] iio: light: gp2ap002: Make use of the helper function dev_err

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Date:   Tue, 28 Sep 2021 09:41:54 +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 v2 3/4] iio: light: gp2ap002: 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/gp2ap002.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/iio/light/gp2ap002.c b/drivers/iio/light/gp2ap002.c
index f960be7d4001..724a3928ead1 100644
--- a/drivers/iio/light/gp2ap002.c
+++ b/drivers/iio/light/gp2ap002.c
@@ -521,15 +521,14 @@ static int gp2ap002_probe(struct i2c_client *client,
 	}
 
 	gp2ap002->vdd = devm_regulator_get(dev, "vdd");
-	if (IS_ERR(gp2ap002->vdd)) {
-		dev_err(dev, "failed to get VDD regulator\n");
-		return PTR_ERR(gp2ap002->vdd);
-	}
+	if (IS_ERR(gp2ap002->vdd))
+		return dev_err_probe(dev, PTR_ERR(gp2ap002->vdd),
+				     "failed to get VDD regulator\n");
+
 	gp2ap002->vio = devm_regulator_get(dev, "vio");
-	if (IS_ERR(gp2ap002->vio)) {
-		dev_err(dev, "failed to get VIO regulator\n");
-		return PTR_ERR(gp2ap002->vio);
-	}
+	if (IS_ERR(gp2ap002->vio))
+		return dev_err_probe(dev, PTR_ERR(gp2ap002->vio),
+				     "failed to get VIO regulator\n");
 
 	/* Operating voltage 2.4V .. 3.6V according to datasheet */
 	ret = regulator_set_voltage(gp2ap002->vdd, 2400000, 3600000);
-- 
2.25.1