| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.4 115/214] regulator: max8998: Ensure enough delay time for max8998_set_voltage_buck_time_sel | Date | Wed, 4 Jun 2014 21:17:58 -0700 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Axel Lin <axel.lin@ingics.com>
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>
--- drivers/regulator/max8998.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- 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; }
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