On Fri, Jul 13, 2018 at 02:56:24PM +0200, Marco Felsch wrote:

> Currently _regulator_do_disable returns 0 if either the ena_pin nor the
> ops.disbale() isn't present. This assumes that the call was successful
> but it wasn't because disbaling isn't supported at all.

> The last case of the if-chain should return -EINVAL, because disabling
> isn't supported by the driver as it is done already by
> _regulator_do_enable.

This is fine - consumers shouldn't expect that a disable will cause
anything to actually get powered off, constraints or other consumers
might mean that the disable doesn't actually happen.  It's just the same
as a consumer with an always on flag.