diff options
| author | Axel Lin <axel.lin@ingics.com> | 2013-01-09 19:34:57 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 16:02:07 -0700 |
| commit | af857f1c3e407fd2650665f5e5c92f70994905fa (patch) | |
| tree | 7b59a7354de7ac4087116ec22582d5e0be061e3d /drivers | |
| parent | cd858528541c10bb879436da8fce44e0c9c85b97 (diff) | |
regulator: max8998: Ensure enough delay time for max8998_set_voltage_buck_time_sel
commit e8d9897ff064b1683c11c15ea1296a67a45d77b0 upstream.
commit 81d0a6ae7befb24c06f4aa4856af7f8d1f612171 upstream.
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>
[bwh: Backported to 3.2: delay is done by driver, not returned to the caller]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Qiang Huang <h.huangqiang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/regulator/max8998.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c index 5890265eeac..130038368b7 100644 --- a/drivers/regulator/max8998.c +++ b/drivers/regulator/max8998.c @@ -492,7 +492,7 @@ buck2_exit: difference = desc->min + desc->step*i - previous_vol/1000; if (difference > 0) - udelay(difference / ((val & 0x0f) + 1)); + udelay(DIV_ROUND_UP(difference, (val & 0x0f) + 1)); return ret; } |