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.

Cc: Lee Jones <[email protected]>
Cc: Daniel Thompson <[email protected]>
Cc: Jingoo Han <[email protected]>
Cc: Bartlomiej Zolnierkiewicz <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]

Signed-off-by: Guru Das Srinagesh <[email protected]>
Reviewed-by: Daniel Thompson <[email protected]>
---
 drivers/video/backlight/pwm_bl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 82b8d75..464baad 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;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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