From: Donggeun Kim <dg77.kim@samsung.com>
Date: Thu, 7 Jul 2011 07:51:56 +0000 (+0900)
Subject: regulator: max8997: Fix setting inappropriate value for ramp_delay variable
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6ff325a2d85481cbe31dfbb74b4fd2d94c115300;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

regulator: max8997: Fix setting inappropriate value for ramp_delay variable

The ramp_delay variable can be set lower than the desired value.
This patch fixes it.

Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: KyungMin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
---

diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index f8940c603cf..ad6628ca94f 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -544,7 +544,8 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev,
 			rid == MAX8997_BUCK4 || rid == MAX8997_BUCK5) {
 		/* If the voltage is increasing */
 		if (org < i)
-			udelay(desc->step * (i - org) / max8997->ramp_delay);
+			udelay(DIV_ROUND_UP(desc->step * (i - org),
+						max8997->ramp_delay));
 	}
 
 	return ret;