linux-kernel - [PATCH] regulator: arizona-micsupp: Fix choosing selector in arizona_micsupp_map

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Date:	Tue, 26 Jun 2012 18:37:58 +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: arizona-micsupp: Fix choosing selector in
 arizona_micsupp_map_voltage

If min_uV is in the range of: 3250001~3269999,
current code uses the equation:
        selector = DIV_ROUND_UP(min_uV - 1700000, 50000);
Then selector will be 32.
Then arizona_micsupp_list_voltage returns -EINVAL for this case which is wrong.

This patch fixes this issue:
If min_uV > 3200000, selector should be ARIZONA_MICSUPP_MAX_SELECTOR.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/arizona-micsupp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c
index 97d85b0..fdd7473 100644
--- a/drivers/regulator/arizona-micsupp.c
+++ b/drivers/regulator/arizona-micsupp.c
@@ -57,7 +57,7 @@ static int arizona_micsupp_map_voltage(struct regulator_dev *rdev,
 	if (min_uV < 1700000)
 		min_uV = 1700000;
 
-	if (min_uV >= 3300000)
+	if (min_uV > 3200000)
 		selector = ARIZONA_MICSUPP_MAX_SELECTOR;
 	else
 		selector = DIV_ROUND_UP(min_uV - 1700000, 50000);
-- 
1.7.9.5



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