From: Axel Lin <axel.lin@ingics.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Liam Girdwood <lrg@ti.com>, linux-kernel@vger.kernel.org
Subject: [PATCH] regulator: wm831x-dcdc: Ensure selected voltage falls within requested range
Date: Fri, 30 Nov 2012 13:19:33 +0800 [thread overview]
Message-ID: <1354252773.23591.1.camel@phoenix> (raw)
Use DIV_ROUND_UP to ensure selected voltage won't less than min_uV due to
integer truncation.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
drivers/regulator/wm831x-dcdc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index bce2565..96450f1 100644
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -223,7 +223,7 @@ static int wm831x_buckv_map_voltage(struct regulator_dev *rdev,
if (min_uV < 600000)
vsel = 0;
else if (min_uV <= 1800000)
- vsel = ((min_uV - 600000) / 12500) + 8;
+ vsel = DIV_ROUND_UP(min_uV - 600000, 12500) + 8;
else
return -EINVAL;
--
1.7.9.5
next reply other threads:[~2012-11-30 5:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-30 5:19 Axel Lin [this message]
2012-12-02 15:12 ` [PATCH] regulator: wm831x-dcdc: Ensure selected voltage falls within requested range Mark Brown
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