Re: [PATCH] video: backlight: jornada720_lcd.c: Cleaning up variable that is never used

[Lee Jones]

> Variable ar assigned a value that is never used.
> I have also removed all the code that thereby serves no purpose.
> 
> This was found using a static code analysis program called cppcheck
> 
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@xxxxxxxxxxxxxxxxxx>
> ---
>  drivers/video/backlight/jornada720_lcd.c |    4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)

Solve it the other way around.

Add a check and return the value if an error is returned.

> diff --git a/drivers/video/backlight/jornada720_lcd.c b/drivers/video/backlight/jornada720_lcd.c
> index da3876c..b304319 100644
> --- a/drivers/video/backlight/jornada720_lcd.c
> +++ b/drivers/video/backlight/jornada720_lcd.c
> @@ -56,12 +56,10 @@ static int jornada_lcd_get_contrast(struct lcd_device *ld)
>  
>  static int jornada_lcd_set_contrast(struct lcd_device *ld, int value)
>  {
> -	int ret;
> -
>  	jornada_ssp_start();
>  
>  	/* start by sending our set contrast cmd to mcu */
> -	ret = jornada_ssp_byte(SETCONTRAST);
> +	jornada_ssp_byte(SETCONTRAST);
>  
>  	/* push the new value */
>  	if (jornada_ssp_byte(value) != TXDUMMY) {

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org â Open source software for ARM SoCs
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