Use DIV_ROUND_UP to prevent truncation by integer division issue.
This ensures we return enough delay time.
Signed-off-by: Axel Lin <axel....@ingics.com>
---
v2: Only fix integer division truncation issue, remove other optimization.
drivers/regulator/max8998.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c
index 06be8cc..1f0df40 100644
--- a/drivers/regulator/max8998.c
+++ b/drivers/regulator/max8998.c
@@ -447,7 +447,7 @@ static int max8998_set_voltage_buck_time_sel(struct
regulator_dev *rdev,
difference = (new_selector - old_selector) * desc->step / 1000;
if (difference > 0)
- return difference / ((val & 0x0f) + 1);
+ return DIV_ROUND_UP(difference, (val & 0x0f) + 1);
return 0;
}
--
1.7.9.5
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