On 11 March 2015 at 16:27, Eric Anholt <e...@anholt.net> wrote: > If we've declared a power domain in the OF, and the OF node is found > but the requested domain hasn't been registered on it yet, then we > probably have just tried to probe before the power domain driver has. > Defer our device's probe until it shows up.
As Geert also pointed out in his reply; I think the proper solution is to move the registration of the PM domain to an earlier init level. The main reason from my side is that I don't want us to invent yet another "probe scenario", since we currently already have some difficulties to handle the existing ones. Like the issue below. http://marc4.marc.info/?t=142392781500004&r=1&w=2 Kind regards Uffe > > Signed-off-by: Eric Anholt <e...@anholt.net> > --- > > I ran into this when turning my ad-hoc code for BCM2835 (Raspberry Pi) > USB poweron support in the DWC2 controller to an OF-based power domain > declaration. > > drivers/base/power/domain.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c > index ba4abbe..2b93c98 100644 > --- a/drivers/base/power/domain.c > +++ b/drivers/base/power/domain.c > @@ -2064,7 +2064,7 @@ EXPORT_SYMBOL_GPL(of_genpd_del_provider); > struct generic_pm_domain *of_genpd_get_from_provider( > struct of_phandle_args *genpdspec) > { > - struct generic_pm_domain *genpd = ERR_PTR(-ENOENT); > + struct generic_pm_domain *genpd = ERR_PTR(-EPROBE_DEFER); > struct of_genpd_provider *provider; > > mutex_lock(&of_genpd_mutex); > -- > 2.1.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
