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Message-Id: <20130115185011.219262776@linuxfoundation.org>
Date: Tue, 15 Jan 2013 10:51:50 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
alan@...rguk.ukuu.org.uk, Axel Lin <axel.lin@...ics.com>,
Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [ 183/221] regulator: max8998: Ensure enough delay time for max8998_set_voltage_buck_time_sel
3.7-stable review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@...ics.com>
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@...ics.com>
Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/regulator/max8998.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/regulator/max8998.c
+++ b/drivers/regulator/max8998.c
@@ -447,7 +447,7 @@ static int max8998_set_voltage_buck_time
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;
}
--
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