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| author | Guru Das Srinagesh <gurus@codeaurora.org> | 2020-06-02 15:31:14 -0700 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2020-06-17 20:42:10 +0200 |
| commit | 134ada17dbad272cdca57f2819a796c87e352274 (patch) | |
| tree | e6e3c16433147f7060f94e8b5682093b5c146f3b /drivers/video/backlight | |
| parent | c7dcccaec2f7e99f95ad4b7c20f4f9086c6982be (diff) | |
| download | linux-134ada17dbad272cdca57f2819a796c87e352274.tar.gz linux-134ada17dbad272cdca57f2819a796c87e352274.tar.bz2 linux-134ada17dbad272cdca57f2819a796c87e352274.zip | |
backlight: pwm_bl: Use 64-bit division function
Since the PWM framework is switching struct pwm_state.period's datatype
to u64, prepare for this transition by using div_u64 to handle a 64-bit
dividend instead of a straight division operation.
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/video/backlight')
| -rw-r--r-- | drivers/video/backlight/pwm_bl.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 82b8d7594701..464baade8f52 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -606,7 +606,8 @@ static int pwm_backlight_probe(struct platform_device *pdev) pb->scale = data->max_brightness; } - pb->lth_brightness = data->lth_brightness * (state.period / pb->scale); + pb->lth_brightness = data->lth_brightness * (div_u64(state.period, + pb->scale)); props.type = BACKLIGHT_RAW; props.max_brightness = data->max_brightness; |