linux-kernel - [PATCH] Input: ps2-gpio - Make use of the helper function dev_err

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Date:   Thu, 16 Sep 2021 23:33:03 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] Input: ps2-gpio - 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/input/serio/ps2-gpio.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/input/serio/ps2-gpio.c b/drivers/input/serio/ps2-gpio.c
index 8970b49ea09a..d46355f868fd 100644
--- a/drivers/input/serio/ps2-gpio.c
+++ b/drivers/input/serio/ps2-gpio.c
@@ -323,18 +323,14 @@ static int ps2_gpio_get_props(struct device *dev,
 				 struct ps2_gpio_data *drvdata)
 {
 	drvdata->gpio_data = devm_gpiod_get(dev, "data", GPIOD_IN);
-	if (IS_ERR(drvdata->gpio_data)) {
-		dev_err(dev, "failed to request data gpio: %ld",
-			PTR_ERR(drvdata->gpio_data));
-		return PTR_ERR(drvdata->gpio_data);
-	}
+	if (IS_ERR(drvdata->gpio_data))
+		return dev_err_probe(dev, PTR_ERR(drvdata->gpio_data),
+				     "failed to request data gpio: %ld")
 
 	drvdata->gpio_clk = devm_gpiod_get(dev, "clk", GPIOD_IN);
-	if (IS_ERR(drvdata->gpio_clk)) {
-		dev_err(dev, "failed to request clock gpio: %ld",
-			PTR_ERR(drvdata->gpio_clk));
-		return PTR_ERR(drvdata->gpio_clk);
-	}
+	if (IS_ERR(drvdata->gpio_clk))
+		return dev_err_probe(dev, PTR_ERR(drvdata->gpio_clk),
+				     "failed to request clock gpio");
 
 	drvdata->write_enable = device_property_read_bool(dev,
 				"write-enable");
-- 
2.25.1