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* [PATCH] staging: iio: ad7816: drop unnecessary initialization of variables
@ 2018-12-12 17:57 Hardik Singh Rathore
  2018-12-16 12:38 ` Jonathan Cameron
  0 siblings, 1 reply; 2+ messages in thread
From: Hardik Singh Rathore @ 2018-12-12 17:57 UTC (permalink / raw)
  To: jic23
  Cc: Hardik Singh Rathore, Lars-Peter Clausen, Michael Hennerich,
	Hartmut Knaack, Peter Meerwald-Stadler, Greg Kroah-Hartman,
	linux-iio, devel, linux-kernel

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@gmail.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


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH] staging: iio: ad7816: drop unnecessary initialization of variables
  2018-12-12 17:57 [PATCH] staging: iio: ad7816: drop unnecessary initialization of variables Hardik Singh Rathore
@ 2018-12-16 12:38 ` Jonathan Cameron
  0 siblings, 0 replies; 2+ messages in thread
From: Jonathan Cameron @ 2018-12-16 12:38 UTC (permalink / raw)
  To: Hardik Singh Rathore
  Cc: Lars-Peter Clausen, Michael Hennerich, Hartmut Knaack,
	Peter Meerwald-Stadler, Greg Kroah-Hartman, linux-iio, devel,
	linux-kernel

On Wed, 12 Dec 2018 23:27:07 +0530
Hardik Singh Rathore <hardiksingh.k@gmail.com> wrote:

> 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@gmail.com>
Applied.

Thanks,

Jonathan
> ---
>  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)


^ permalink raw reply	[flat|nested] 2+ messages in thread

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2018-12-12 17:57 [PATCH] staging: iio: ad7816: drop unnecessary initialization of variables Hardik Singh Rathore
2018-12-16 12:38 ` Jonathan Cameron

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