> > +static void pwm_backlight_enable(struct backlight_device *bl) {
> > + struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
> > +
> > + /* Bail if we are already enabled. */
> > + if (pb->enabled)
> > + return;
> > +
> > + pwm_enable(pb->pwm);
> > +
> > + if (regulator_enable(pb->enable_supply) != 0)
>
> I would loose the '!= 0'
I think I prefer the '!= 0'. Without it, it looks at first glance
like regulator_enable() is following boolean semantics,
so it reads kind of weird. But I'll defer to Thierry on this
one. Thierry, what's your preference?
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