linux-kernel - [PATCH 5/5] power: supply: lego_ev3: Simplify with dev_err

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Date:   Wed, 26 Aug 2020 16:48:58 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Pali Rohár <pali@...nel.org>,
        "Andrew F. Davis" <afd@...com>, Sebastian Reichel <sre@...nel.org>,
        Paul Cercueil <paul@...pouillou.net>,
        David Lechner <david@...hnology.com>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 5/5] power: supply: lego_ev3: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/power/supply/lego_ev3_battery.c | 24 +++++++++---------------
 1 file changed, 9 insertions(+), 15 deletions(-)

diff --git a/drivers/power/supply/lego_ev3_battery.c b/drivers/power/supply/lego_ev3_battery.c
index 1ae3710909b7..ccb00be38e2c 100644
--- a/drivers/power/supply/lego_ev3_battery.c
+++ b/drivers/power/supply/lego_ev3_battery.c
@@ -166,27 +166,21 @@ static int lego_ev3_battery_probe(struct platform_device *pdev)
 
 	batt->iio_v = devm_iio_channel_get(dev, "voltage");
 	err = PTR_ERR_OR_ZERO(batt->iio_v);
-	if (err) {
-		if (err != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get voltage iio channel\n");
-		return err;
-	}
+	if (err)
+		return dev_err_probe(dev, err,
+				     "Failed to get voltage iio channel\n");
 
 	batt->iio_i = devm_iio_channel_get(dev, "current");
 	err = PTR_ERR_OR_ZERO(batt->iio_i);
-	if (err) {
-		if (err != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get current iio channel\n");
-		return err;
-	}
+	if (err)
+		return dev_err_probe(dev, err,
+				     "Failed to get current iio channel\n");
 
 	batt->rechargeable_gpio = devm_gpiod_get(dev, "rechargeable", GPIOD_IN);
 	err = PTR_ERR_OR_ZERO(batt->rechargeable_gpio);
-	if (err) {
-		if (err != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get rechargeable gpio\n");
-		return err;
-	}
+	if (err)
+		return dev_err_probe(dev, err,
+				     "Failed to get rechargeable gpio\n");
 
 	/*
 	 * The rechargeable battery indication switch cannot be changed without
-- 
2.17.1