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

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Date:   Thu, 16 Sep 2021 23:32:25 +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: gpio_decoder - 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/misc/gpio_decoder.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/input/misc/gpio_decoder.c b/drivers/input/misc/gpio_decoder.c
index 145826a1a9a1..06a45a0df7a3 100644
--- a/drivers/input/misc/gpio_decoder.c
+++ b/drivers/input/misc/gpio_decoder.c
@@ -80,10 +80,9 @@ static int gpio_decoder_probe(struct platform_device *pdev)
 	device_property_read_u32(dev, "linux,axis", &decoder->axis);
 
 	decoder->input_gpios = devm_gpiod_get_array(dev, NULL, GPIOD_IN);
-	if (IS_ERR(decoder->input_gpios)) {
-		dev_err(dev, "unable to acquire input gpios\n");
-		return PTR_ERR(decoder->input_gpios);
-	}
+	if (IS_ERR(decoder->input_gpios))
+		return dev_err_probe(dev, PTR_ERR(decoder->input_gpios),
+				     "unable to acquire input gpios\n");
 
 	if (decoder->input_gpios->ndescs < 2) {
 		dev_err(dev, "not enough gpios found\n");
-- 
2.25.1