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Date: Mon, 14 May 2012 10:33:37 +0800 From: Axel Lin <axel.lin@...il.com> To: linux-kernel@...r.kernel.org Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>, Liam Girdwood <lrg@...com> Subject: [PATCH] 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@...il.com> --- drivers/regulator/core.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 5751f5e..8918271 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -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; -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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