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regulator: da9052: Ensure enough delay time for .set_voltage_time_sel
[ Upstream commit a336dc8f68
]
Use DIV_ROUND_UP to prevent truncation by integer division issue.
This ensures we return enough delay time.
Also fix returning negative value when new_sel < old_sel.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210618141412.4014912-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 2 additions and 1 deletions
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@ -258,7 +258,8 @@ static int da9052_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
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case DA9052_ID_BUCK3:
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case DA9052_ID_BUCK3:
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case DA9052_ID_LDO2:
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case DA9052_ID_LDO2:
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case DA9052_ID_LDO3:
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case DA9052_ID_LDO3:
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ret = (new_sel - old_sel) * info->step_uV / 6250;
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ret = DIV_ROUND_UP(abs(new_sel - old_sel) * info->step_uV,
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6250);
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break;
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break;
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}
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}
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