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regulator: core: Ensure simple linear voltage mappings falls within the specified range 

Integer division may truncate the result.
Use DIV_ROUND_UP to ensure simple linear voltage mappings falls within the
specified range.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2012-05-14 10:33:37 +08:00 committed by Mark Brown
parent 684ae39b91
commit ccfcb1c3cf
1 changed files with 1 additions and 1 deletions
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2
drivers/regulator/core.c
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@ -2047,7 +2047,7 @@ int regulator_map_voltage_linear(struct regulator_dev *rdev,
return -EINVAL;
}
ret = (min_uV - rdev->desc->min_uV) / rdev->desc->uV_step;
ret = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
if (ret < 0)
return ret;