linux-kernel - Re: [PATCH RFC/RFT] regulator: palmas: Clear PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK bits in palmas_set_mode

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Date:	Thu, 07 Jun 2012 11:58:31 +0100
From:	Graeme Gregory <gg@...mlogic.co.uk>
To:	Axel Lin <axel.lin@...il.com>
CC:	linux-kernel@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>
Subject: Re: [PATCH RFC/RFT] regulator: palmas: Clear PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK
 bits in palmas_set_mode_smps

That looks like a C&P error on my part.

Thanks for noticing.

Acked-by: Graeme Gregory <gg@...mlogic.co.uk>

On 07/06/12 10:08, Axel Lin wrote:
> Current code actually clears more bits than PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK bits.
>
> Signed-off-by: Axel Lin <axel.lin@...il.com>
> ---
> Hi Graeme,
>
> I'm wandering if we need to clear the status bits.
> Current code actually clears bit[7:4] and bit[1:0] and set bit[7:6] to bit[3:2].
> Looks like we only need to clear PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK bit[1:0] bits here.
> and this change makes the intent more clear.
>
> I don't have this hardware,
> I'd appreciate if you can test this patch if you think this change ok.
>
> Regards,
> Axel
>  drivers/regulator/palmas-regulator.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
> index 92f475c..ae0951a 100644
> --- a/drivers/regulator/palmas-regulator.c
> +++ b/drivers/regulator/palmas-regulator.c
> @@ -257,8 +257,7 @@ static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
>  	unsigned int reg;
>  
>  	palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
> -	reg &= ~PALMAS_SMPS12_CTRL_STATUS_MASK;
> -	reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
> +	reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
>  
>  	switch (mode) {
>  	case REGULATOR_MODE_NORMAL:

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