* [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 related [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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