linux-kernel - [PATCH] iio/pressure/hp206c: Use common error handling code in hp206c_conv_and

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Message-ID: <bbe04556-c62c-6074-d663-884a702614f4@users.sourceforge.net>
Date:   Thu, 26 Oct 2017 15:45:43 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-iio@...r.kernel.org,
        Crestez Dan Leonard <leonard.crestez@...el.com>,
        Hartmut Knaack <knaack.h@....de>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] iio/pressure/hp206c: Use common error handling code in
 hp206c_conv_and_read()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 26 Oct 2017 15:34:46 +0200

Add a jump target so that a specific error message is stored only once
at the end of this function implementation.
Replace two calls of the function "dev_err" by goto statements.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/iio/pressure/hp206c.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/iio/pressure/hp206c.c b/drivers/iio/pressure/hp206c.c
index c38c19678cf6..978338f2a6e5 100644
--- a/drivers/iio/pressure/hp206c.c
+++ b/drivers/iio/pressure/hp206c.c
@@ -176,10 +176,8 @@ static int hp206c_conv_and_read(struct iio_dev *indio_dev,
 	struct i2c_client *client = data->client;
 
 	ret = hp206c_wait_dev_rdy(indio_dev);
-	if (ret < 0) {
-		dev_err(&indio_dev->dev, "Device not ready: %d\n", ret);
-		return ret;
-	}
+	if (ret < 0)
+		goto report_failure;
 
 	ret = i2c_smbus_write_byte(client, conv_cmd);
 	if (ret < 0) {
@@ -190,16 +188,18 @@ static int hp206c_conv_and_read(struct iio_dev *indio_dev,
 	usleep_range(sleep_us, sleep_us * 3 / 2);
 
 	ret = hp206c_wait_dev_rdy(indio_dev);
-	if (ret < 0) {
-		dev_err(&indio_dev->dev, "Device not ready: %d\n", ret);
-		return ret;
-	}
+	if (ret < 0)
+		goto report_failure;
 
 	ret = hp206c_read_20bit(client, read_cmd);
 	if (ret < 0)
 		dev_err(&indio_dev->dev, "Failed read: %d\n", ret);
 
 	return ret;
+
+report_failure:
+	dev_err(&indio_dev->dev, "Device not ready: %d\n", ret);
+	return ret;
 }
 
 static int hp206c_read_raw(struct iio_dev *indio_dev,
-- 
2.14.3