linux-kernel - [PATCH] staging: iio: ad7816: drop unnecessary initialization of variables

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Date:   Wed, 12 Dec 2018 23:27:07 +0530
From:   Hardik Singh Rathore <hardiksingh.k@...il.com>
To:     jic23@...nel.org
Cc:     Hardik Singh Rathore <hardiksingh.k@...il.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: iio: ad7816: drop unnecessary initialization of variables

Initialization is unnecessary when the variable is written before it is
read. There were some occasions in which the driver would initialize `ret'
during declaration without need.

Signed-off-by: Hardik Singh Rathore <hardiksingh.k@...il.com>
---
 drivers/staging/iio/adc/ad7816.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
index 5209651a1b25..ee50e7296795 100644
--- a/drivers/staging/iio/adc/ad7816.c
+++ b/drivers/staging/iio/adc/ad7816.c
@@ -65,7 +65,7 @@ enum ad7816_type {
 static int ad7816_spi_read(struct ad7816_chip_info *chip, u16 *data)
 {
 	struct spi_device *spi_dev = chip->spi_dev;
-	int ret = 0;
+	int ret;
 	__be16 buf;
 
 	gpiod_set_value(chip->rdwr_pin, 1);
@@ -106,7 +106,7 @@ static int ad7816_spi_read(struct ad7816_chip_info *chip, u16 *data)
 static int ad7816_spi_write(struct ad7816_chip_info *chip, u8 data)
 {
 	struct spi_device *spi_dev = chip->spi_dev;
-	int ret = 0;
+	int ret;
 
 	gpiod_set_value(chip->rdwr_pin, 1);
 	gpiod_set_value(chip->rdwr_pin, 0);
@@ -354,8 +354,7 @@ static int ad7816_probe(struct spi_device *spi_dev)
 {
 	struct ad7816_chip_info *chip;
 	struct iio_dev *indio_dev;
-	int ret = 0;
-	int i;
+	int i, ret;
 
 	indio_dev = devm_iio_device_alloc(&spi_dev->dev, sizeof(*chip));
 	if (!indio_dev)
-- 
2.17.1