[U-Boot] [PATCH] power: regulator: denied disable on always-on regulator

[Patrice CHOTARD]

Hi Jaehoon

It's a gentle reminder to not forgot this patch.

Thanks

Patrice

On 05/31/2018 09:57 AM, Patrice Chotard wrote:
> From: Patrick Delaunay <patrick.delaunay at st.com>
> 
> Don't disable regulator which are tagged as "regulator-always-on" in DT.
> 
> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
> Signed-off-by: Patrice Chotard <patrice.chotard at st.com>
> ---
> 
>   drivers/power/regulator/regulator-uclass.c | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/power/regulator/regulator-uclass.c b/drivers/power/regulator/regulator-uclass.c
> index 4da8e43259fc..4511625ff251 100644
> --- a/drivers/power/regulator/regulator-uclass.c
> +++ b/drivers/power/regulator/regulator-uclass.c
> @@ -106,10 +106,15 @@ int regulator_get_enable(struct udevice *dev)
>   int regulator_set_enable(struct udevice *dev, bool enable)
>   {
>   	const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
> +	struct dm_regulator_uclass_platdata *uc_pdata;
>   
>   	if (!ops || !ops->set_enable)
>   		return -ENOSYS;
>   
> +	uc_pdata = dev_get_uclass_platdata(dev);
> +	if (!enable && uc_pdata->always_on)
> +		return -EACCES;
> +
>   	return ops->set_enable(dev, enable);
>   }
>   
>