On Wed, Oct 02, 2019 at 09:56:01AM -0700, Matthias Kaehlcke wrote:
> pwm_backlight_probe() re-assigns pb->levels for every brightness
> level. This is not needed and was likely not intended, since
> neither side of the assignment changes during the loop. Assign
> the field only once.
>
> Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
Reviewed-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
> ---
>
> Changes in v2:
> - removed curly braces from for loop
>
> drivers/video/backlight/pwm_bl.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
> index 746eebc411df..05d3b3802658 100644
> --- a/drivers/video/backlight/pwm_bl.c
> +++ b/drivers/video/backlight/pwm_bl.c
> @@ -564,18 +564,17 @@ static int pwm_backlight_probe(struct platform_device *pdev)
> memset(&props, 0, sizeof(struct backlight_properties));
>
> if (data->levels) {
> + pb->levels = data->levels;
> +
> /*
> * For the DT case, only when brightness levels is defined
> * data->levels is filled. For the non-DT case, data->levels
> * can come from platform data, however is not usual.
> */
> - for (i = 0; i <= data->max_brightness; i++) {
> + for (i = 0; i <= data->max_brightness; i++)
> if (data->levels[i] > pb->scale)
> pb->scale = data->levels[i];
>
> - pb->levels = data->levels;
> - }
> -
> if (pwm_backlight_is_linear(data))
> props.scale = BACKLIGHT_SCALE_LINEAR;
> else
> --
> 2.23.0.444.g18eeb5a265-goog
>
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