diff mbox

backlight: ili922x: remove redundant variable len

Message ID 20171105115326.5276-1-colin.king@canonical.com (mailing list archive)
State New, archived
Headers show

Commit Message

Colin King Nov. 5, 2017, 11:53 a.m. UTC
From: Colin Ian King <colin.king@canonical.com>

The variable len is assigned but never read, therefore it is redundant
and can be removed. Cleans up clang warning:

drivers/video/backlight/ili922x.c:276:2: warning: Value stored to 'len'
is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/video/backlight/ili922x.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Han Jingoo Nov. 5, 2017, 5:23 p.m. UTC | #1
On Sunday, November 5, 2017 6:53 AM, Colin King wrote:
> 
> From: Colin Ian King <colin.king@canonical.com>
> 
> The variable len is assigned but never read, therefore it is redundant
> and can be removed. Cleans up clang warning:
> 
> drivers/video/backlight/ili922x.c:276:2: warning: Value stored to 'len'
> is never read
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Acked-by: Jingoo Han <jingoohan1@gmail.com>

Thank you for sending the patch.
It looks good.

Best regards,
Jingoo Han

> ---
>  drivers/video/backlight/ili922x.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/video/backlight/ili922x.c
> b/drivers/video/backlight/ili922x.c
> index a9e9cef..2b6c6aa 100644
> --- a/drivers/video/backlight/ili922x.c
> +++ b/drivers/video/backlight/ili922x.c
> @@ -251,7 +251,7 @@ static int ili922x_write(struct spi_device *spi, u8
> reg, u16 value)
>  	struct spi_transfer xfer_regindex, xfer_regvalue;
>  	unsigned char tbuf[CMD_BUFSIZE];
>  	unsigned char rbuf[CMD_BUFSIZE];
> -	int ret, len = 0;
> +	int ret;
> 
>  	memset(&xfer_regindex, 0, sizeof(struct spi_transfer));
>  	memset(&xfer_regvalue, 0, sizeof(struct spi_transfer));
> @@ -273,7 +273,6 @@ static int ili922x_write(struct spi_device *spi, u8
> reg, u16 value)
>  	ret = spi_sync(spi, &msg);
> 
>  	spi_message_init(&msg);
> -	len = 0;
>  	tbuf[0] = set_tx_byte(START_BYTE(ili922x_id, START_RS_REG,
>  					 START_RW_WRITE));
>  	tbuf[1] = set_tx_byte((value & 0xFF00) >> 8);
> --
> 2.7.4


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Daniel Thompson Nov. 6, 2017, 11:36 a.m. UTC | #2
On 05/11/17 11:53, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> The variable len is assigned but never read, therefore it is redundant
> and can be removed. Cleans up clang warning:
> 
> drivers/video/backlight/ili922x.c:276:2: warning: Value stored to 'len'
> is never read
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Acked-by: Daniel Thompson <daniel.thompson@linaro.org>

> ---
>   drivers/video/backlight/ili922x.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
> index a9e9cef..2b6c6aa 100644
> --- a/drivers/video/backlight/ili922x.c
> +++ b/drivers/video/backlight/ili922x.c
> @@ -251,7 +251,7 @@ static int ili922x_write(struct spi_device *spi, u8 reg, u16 value)
>   	struct spi_transfer xfer_regindex, xfer_regvalue;
>   	unsigned char tbuf[CMD_BUFSIZE];
>   	unsigned char rbuf[CMD_BUFSIZE];
> -	int ret, len = 0;
> +	int ret;
>   
>   	memset(&xfer_regindex, 0, sizeof(struct spi_transfer));
>   	memset(&xfer_regvalue, 0, sizeof(struct spi_transfer));
> @@ -273,7 +273,6 @@ static int ili922x_write(struct spi_device *spi, u8 reg, u16 value)
>   	ret = spi_sync(spi, &msg);
>   
>   	spi_message_init(&msg);
> -	len = 0;
>   	tbuf[0] = set_tx_byte(START_BYTE(ili922x_id, START_RS_REG,
>   					 START_RW_WRITE));
>   	tbuf[1] = set_tx_byte((value & 0xFF00) >> 8);
> 

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Lee Jones Nov. 8, 2017, 10:43 a.m. UTC | #3
On Sun, 05 Nov 2017, Colin King wrote:

> From: Colin Ian King <colin.king@canonical.com>
> 
> The variable len is assigned but never read, therefore it is redundant
> and can be removed. Cleans up clang warning:
> 
> drivers/video/backlight/ili922x.c:276:2: warning: Value stored to 'len'
> is never read
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  drivers/video/backlight/ili922x.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Applied, thanks.

> diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
> index a9e9cef..2b6c6aa 100644
> --- a/drivers/video/backlight/ili922x.c
> +++ b/drivers/video/backlight/ili922x.c
> @@ -251,7 +251,7 @@ static int ili922x_write(struct spi_device *spi, u8 reg, u16 value)
>  	struct spi_transfer xfer_regindex, xfer_regvalue;
>  	unsigned char tbuf[CMD_BUFSIZE];
>  	unsigned char rbuf[CMD_BUFSIZE];
> -	int ret, len = 0;
> +	int ret;
>  
>  	memset(&xfer_regindex, 0, sizeof(struct spi_transfer));
>  	memset(&xfer_regvalue, 0, sizeof(struct spi_transfer));
> @@ -273,7 +273,6 @@ static int ili922x_write(struct spi_device *spi, u8 reg, u16 value)
>  	ret = spi_sync(spi, &msg);
>  
>  	spi_message_init(&msg);
> -	len = 0;
>  	tbuf[0] = set_tx_byte(START_BYTE(ili922x_id, START_RS_REG,
>  					 START_RW_WRITE));
>  	tbuf[1] = set_tx_byte((value & 0xFF00) >> 8);
diff mbox

Patch

diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
index a9e9cef..2b6c6aa 100644
--- a/drivers/video/backlight/ili922x.c
+++ b/drivers/video/backlight/ili922x.c
@@ -251,7 +251,7 @@  static int ili922x_write(struct spi_device *spi, u8 reg, u16 value)
 	struct spi_transfer xfer_regindex, xfer_regvalue;
 	unsigned char tbuf[CMD_BUFSIZE];
 	unsigned char rbuf[CMD_BUFSIZE];
-	int ret, len = 0;
+	int ret;
 
 	memset(&xfer_regindex, 0, sizeof(struct spi_transfer));
 	memset(&xfer_regvalue, 0, sizeof(struct spi_transfer));
@@ -273,7 +273,6 @@  static int ili922x_write(struct spi_device *spi, u8 reg, u16 value)
 	ret = spi_sync(spi, &msg);
 
 	spi_message_init(&msg);
-	len = 0;
 	tbuf[0] = set_tx_byte(START_BYTE(ili922x_id, START_RS_REG,
 					 START_RW_WRITE));
 	tbuf[1] = set_tx_byte((value & 0xFF00) >> 8);