Re: [PATCH v4 2/7] regulator: qcom_spmi: Refactor get_mode/set_mode

[Bjorn Andersson]

On Thu 13 Jun 14:25 PDT 2019, Jeffrey Hugo wrote:

> spmi_regulator_common_get_mode and spmi_regulator_common_set_mode use
> multi-level ifs which mirror a switch statement.  Refactor to use a switch
> statement to make the code flow more clear.
> 

Reviewed-by: Bjorn Andersson <bjorn.anders...@linaro.org>

> Signed-off-by: Jeffrey Hugo <jeffrey.l.h...@gmail.com>
> ---
>  drivers/regulator/qcom_spmi-regulator.c | 26 +++++++++++++++++--------
>  1 file changed, 18 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/regulator/qcom_spmi-regulator.c 
> b/drivers/regulator/qcom_spmi-regulator.c
> index 42c429d50743..1b3383a24c9d 100644
> --- a/drivers/regulator/qcom_spmi-regulator.c
> +++ b/drivers/regulator/qcom_spmi-regulator.c
> @@ -911,13 +911,16 @@ static unsigned int 
> spmi_regulator_common_get_mode(struct regulator_dev *rdev)
>  
>       spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
>  
> -     if (reg & SPMI_COMMON_MODE_HPM_MASK)
> -             return REGULATOR_MODE_NORMAL;
> +     reg &= SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
>  
> -     if (reg & SPMI_COMMON_MODE_AUTO_MASK)
> +     switch (reg) {
> +     case SPMI_COMMON_MODE_HPM_MASK:
> +             return REGULATOR_MODE_NORMAL;
> +     case SPMI_COMMON_MODE_AUTO_MASK:
>               return REGULATOR_MODE_FAST;
> -
> -     return REGULATOR_MODE_IDLE;
> +     default:
> +             return REGULATOR_MODE_IDLE;
> +     }
>  }
>  
>  static int
> @@ -925,12 +928,19 @@ spmi_regulator_common_set_mode(struct regulator_dev 
> *rdev, unsigned int mode)
>  {
>       struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
>       u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
> -     u8 val = 0;
> +     u8 val;
>  
> -     if (mode == REGULATOR_MODE_NORMAL)
> +     switch (mode) {
> +     case REGULATOR_MODE_NORMAL:
>               val = SPMI_COMMON_MODE_HPM_MASK;
> -     else if (mode == REGULATOR_MODE_FAST)
> +             break;
> +     case REGULATOR_MODE_FAST:
>               val = SPMI_COMMON_MODE_AUTO_MASK;
> +             break;
> +     default:
> +             val = 0;
> +             break;
> +     }
>  
>       return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
>  }
> -- 
> 2.17.1
>