Re: [PATCH v4 14/26] staging: iio: tsl2583: updated code comment to match what the code does

[Jonathan Cameron]

On 12/11/16 18:19, Brian Masney wrote:
> If channel 0 does not have any data, then the code sets the lux to zero.
> The corresponding comment says that the last value is returned. This
> updates the comment to correctly reflect what the code does. It also
> clarifies the comment about why 0 is returned.
> 
> Signed-off-by: Brian Masney <masn...@onstation.org>
Applied.
> ---
>  drivers/staging/iio/light/tsl2583.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/iio/light/tsl2583.c 
> b/drivers/staging/iio/light/tsl2583.c
> index 52a39a6..dbb7f6a 100644
> --- a/drivers/staging/iio/light/tsl2583.c
> +++ b/drivers/staging/iio/light/tsl2583.c
> @@ -221,7 +221,11 @@ static int tsl2583_get_lux(struct iio_dev *indio_dev)
>               goto return_max;
>  
>       if (!ch0) {
> -             /* have no data, so return LAST VALUE */
> +             /*
> +              * The sensor appears to be in total darkness so set the
> +              * calculated lux to 0 and return early to avoid a division by
> +              * zero below when calculating the ratio.
> +              */
>               ret = 0;
>               chip->als_cur_info.lux = 0;
>               goto done;
>