[U-Boot] [PATCH] sunxi: axp2xx: disable ldoio0/1 at boot

[Ian Campbell]

On Mon, 2016-09-12 at 09:55 +0200, Hans de Goede wrote:
> @@ -223,7 +223,14 @@ int axp_init(void)
> >  	if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
> >  		return -ENODEV;
>  
> > -	return 0;
> > +	/*
> > +	 * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
> > +	 * from android these are sometimes on.
> > +	 */
> > +	ret |= pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
> > +	ret |= pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);

If ret values are errno's (as the context suggests by containing
-ENODEV) then or-ing them together could result in corruption from
combining two distinct errno values.

Ian.