linux-kernel - [PATCH] regulator: core: Properly handle the case min_uV < rdev->desc->min_uV in map_voltage

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Message-ID: <1339033932.7309.1.camel@phoenix>
Date:	Thu, 07 Jun 2012 09:52:12 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>
Subject: [PATCH] regulator: core: Properly handle the case min_uV <
 rdev->desc->min_uV in map_voltage_linear

Properly handle the case if the specified min_uV is less than the voltage given
by the lowest selector.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/core.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 3cbe312..02c1940 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2075,6 +2075,9 @@ int regulator_map_voltage_linear(struct regulator_dev *rdev,
 		return -EINVAL;
 	}
 
+	if (min_uV < rdev->desc->min_uV)
+		min_uV = rdev->desc->min_uV;
+
 	ret = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
 	if (ret < 0)
 		return ret;
-- 
1.7.9.5



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