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regulator: max8998: Ensure enough delay time for max8998_set_voltage_buck_time_sel
author
Axel Lin
<axel.lin@ingics.com>
Wed, 9 Jan 2013 11:34:57 +0000
(19:34 +0800)
committer
Mark Brown
<broonie@opensource.wolfsonmicro.com>
Thu, 10 Jan 2013 12:55:49 +0000
(12:55 +0000)
Use DIV_ROUND_UP to prevent truncation by integer division issue.
This ensures we return enough delay time.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org
drivers/regulator/max8998.c
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diff --git
a/drivers/regulator/max8998.c
b/drivers/regulator/max8998.c
index
06be8cc
..
1f0df40
100644
(file)
--- a/
drivers/regulator/max8998.c
+++ b/
drivers/regulator/max8998.c
@@
-447,7
+447,7
@@
static int max8998_set_voltage_buck_time_sel(struct regulator_dev *rdev,
difference = (new_selector - old_selector) * desc->step / 1000;
if (difference > 0)
- return
difference / (
(val & 0x0f) + 1);
+ return
DIV_ROUND_UP(difference,
(val & 0x0f) + 1);
return 0;
}