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>
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 @@
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;