linux-kernel - [PATCH 3/4] staging: iio: ad7150: simplify i2c SMBus return treatment

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Date:   Fri, 3 May 2019 19:15:25 -0300
From:   Melissa Wen <melissa.srw@...il.com>
To:     Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Stefan Popa <stefan.popa@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Barry Song <21cnbao@...il.com>
Cc:     linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, kernel-usp@...glegroups.com
Subject: [PATCH 3/4] staging: iio: ad7150: simplify i2c SMBus return treatment

Since i2c_smbus_write_byte_data returns no-positive value, this commit
making the treatment of its return value less verbose.

Signed-off-by: Melissa Wen <melissa.srw@...il.com>
---
 drivers/staging/iio/cdc/ad7150.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
index 4ba46fb6ac02..3a4572a9e5ec 100644
--- a/drivers/staging/iio/cdc/ad7150.c
+++ b/drivers/staging/iio/cdc/ad7150.c
@@ -201,16 +201,12 @@ static int ad7150_write_event_params(struct iio_dev *indio_dev,
 	ret = i2c_smbus_write_byte_data(chip->client,
 					ad7150_addresses[chan][4],
 					sens);
-	if (ret < 0)
+	if (ret)
 		return ret;
-
-	ret = i2c_smbus_write_byte_data(chip->client,
+	else
+		return i2c_smbus_write_byte_data(chip->client,
 					ad7150_addresses[chan][5],
 					timeout);
-	if (ret < 0)
-		return ret;
-
-	return 0;
 }
 
 static int ad7150_write_event_config(struct iio_dev *indio_dev,
-- 
2.20.1