On Mon 2019-04-01 06:30:32, Brian Masney wrote:
> lm3630a_bank_a_update_status() and lm3630a_bank_b_update_status()
> both return the brightness value if the brightness was successfully
> updated. Writing to these attributes via sysfs would cause a 'Bad
> address' error to be returned. These functions should return 0 on
> success, so let's change it to correct that error.
> 
> Signed-off-by: Brian Masney <masneyb@onstation.org>
> Fixes: 28e64a68a2ef ("backlight: lm3630: apply chip revision")

Acked-by: Pavel Machek <pavel@ucw.cz>

> ---
>  drivers/video/backlight/lm3630a_bl.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/video/backlight/lm3630a_bl.c b/drivers/video/backlight/lm3630a_bl.c
> index 2030a6b77a09..ef2553f452ca 100644
> --- a/drivers/video/backlight/lm3630a_bl.c
> +++ b/drivers/video/backlight/lm3630a_bl.c
> @@ -201,7 +201,7 @@ static int lm3630a_bank_a_update_status(struct backlight_device *bl)
>  				      LM3630A_LEDA_ENABLE, LM3630A_LEDA_ENABLE);
>  	if (ret < 0)
>  		goto out_i2c_err;
> -	return bl->props.brightness;
> +	return 0;
>  
>  out_i2c_err:
>  	dev_err(pchip->dev, "i2c failed to access\n");
> @@ -278,7 +278,7 @@ static int lm3630a_bank_b_update_status(struct backlight_device *bl)
>  				      LM3630A_LEDB_ENABLE, LM3630A_LEDB_ENABLE);
>  	if (ret < 0)
>  		goto out_i2c_err;
> -	return bl->props.brightness;
> +	return 0;
>  
>  out_i2c_err:
>  	dev_err(pchip->dev, "i2c failed to access REG_CTRL\n");

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html