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SubjectRe: [PATCH] Regulators: lp3971 - Fix setting val for LDO2 and LDO4
On Tue, Mar 09, 2010 at 05:14:53PM +0800, axel lin wrote:
> From 4e4c5f8267a4fbf651b4cc26c5f72465514f6224 Mon Sep 17 00:00:00 2001
> From: Axel Lin <axel.lin@gmail.com>
> Date: Tue, 9 Mar 2010 16:53:59 +0800
> Subject: [PATCH] lp3971: Fix setting val for LDO2 and LDO4

Please try to follow the instructions for submitting patches in
Documentation/SubmittingPatches - this is missing Signed-off-by and CCs
to maintainers.

> In lp3971_ldo_set_voltage function, it requires val to left shift 4
> bits for LDO2 and LDO4.
> This patch fix this issue.

CCing in the folks who worked with the hardware for confirmation - the
patch looks OK to me but it's surprising that this wasn't noticed when
the driver was being developed, it might be that the chip is doing
something strange here.

> ---
> drivers/regulator/lp3971.c | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/regulator/lp3971.c b/drivers/regulator/lp3971.c
> index f5532ed..a28ae37 100644
> --- a/drivers/regulator/lp3971.c
> +++ b/drivers/regulator/lp3971.c
> @@ -187,7 +187,8 @@ static int lp3971_ldo_set_voltage(struct regulator_dev *dev,
> return -EINVAL;
>
> return lp3971_set_bits(lp3971, LP3971_LDO_VOL_CONTR_REG(ldo),
> - LDO_VOL_CONTR_MASK << LDO_VOL_CONTR_SHIFT(ldo), val);
> + LDO_VOL_CONTR_MASK << LDO_VOL_CONTR_SHIFT(ldo),
> + val << LDO_VOL_CONTR_SHIFT(ldo));
> }
>
> static struct regulator_ops lp3971_ldo_ops = {


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