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Message-Id: <20120510173134.595937051@linuxfoundation.org>
Date: Thu, 10 May 2012 10:31:51 -0700
From: Greg KH <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
alan@...rguk.ukuu.org.uk, Axel Lin <axel.lin@...il.com>,
Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [ 19/52] regulator: Fix the logic to ensure new voltage setting in valid range
3.3-stable review patch. If anyone has any objections, please let me know.
------------------
From: Axel Lin <axel.lin@...il.com>
commit f55205f4d4a8823a11bb8b37ef2ecbd78fb09463 upstream.
I think this is a typo.
To ensure new voltage setting won't greater than desc->max,
the equation should be desc->min + desc->step * new_val <= desc->max.
Signed-off-by: Axel Lin <axel.lin@...il.com>
Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/regulator/max8997.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -689,7 +689,7 @@ static int max8997_set_voltage_buck(stru
}
new_val++;
- } while (desc->min + desc->step + new_val <= desc->max);
+ } while (desc->min + desc->step * new_val <= desc->max);
new_idx = tmp_idx;
new_val = tmp_val;
--
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