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regulator: wm831x-dcdc: Ensure selected voltage falls within requested range

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Use DIV_ROUND_UP to ensure selected voltage won't less than min_uV due to
integer truncation.

Signed-off-by: Axel Lin <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
This commit is contained in:
Axel Lin 2012-11-30 13:19:33 +08:00 • committed by Mark Brown
commit 1a679930e1
1 changed files with 1 additions and 1 deletions
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2
drivers/regulator/wm831x-dcdc.c
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@ -223,7 +223,7 @@ static int wm831x_buckv_map_voltage(struct regulator_dev *rdev,
if (min_uV < 600000)
vsel = 0;
else if (min_uV <= 1800000)
vsel = ((min_uV - 600000) / 12500) + 8;
vsel = DIV_ROUND_UP(min_uV - 600000, 12500) + 8;
else
return -EINVAL;