Hi. I noticed my board would not work any more when pulling recent updates. I did "git-bisect" and I found the following commit is it. commit 1e2a7d78499ec8859d2b469051b7b80bad3b08aa Author: Jon Hunter <jonathanh@xxxxxxxxxx> Date: Tue Jun 7 16:12:28 2016 +0100 irqdomain: Don't set type when mapping an IRQ With reverting it, everything works fine for me. My board is arch/arm64/boot/dts/socionext/uniphier-ph1-ld20-ref.dts Is anything wrong with IRQ settings in my Device Tree? If 1e2a7d784 is really a buggy commit, could you do something please? 2016-06-08 0:12 GMT+09:00 Jon Hunter <jonathanh@xxxxxxxxxx>: > Some IRQ chips, such as GPIO controllers or secondary level interrupt > controllers, may require require additional runtime power management > control to ensure they are accessible. For such IRQ chips, it makes sense > to enable the IRQ chip when interrupts are requested and disabled them > again once all interrupts have been freed. > > When mapping an IRQ, the IRQ type settings are read and then programmed. > The mapping of the IRQ happens before the IRQ is requested and so the > programming of the type settings occurs before the IRQ is requested. This > is a problem for IRQ chips that require additional power management > control because they may not be accessible yet. Therefore, when mapping > the IRQ, don't program the type settings, just save them and then program > these saved settings when the IRQ is requested (so long as if they are not > overridden via the call to request the IRQ). > > Add a stub function for irq_domain_free_irqs() to avoid any compilation > errors when CONFIG_IRQ_DOMAIN_HIERARCHY is not selected. > > Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx> > Reviewed-by: Marc Zyngier <marc.zyngier@xxxxxxx> > --- > include/linux/irqdomain.h | 3 +++ > kernel/irq/irqdomain.c | 23 ++++++++++++++++++----- > 2 files changed, 21 insertions(+), 5 deletions(-) > > diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h > index f1f36e04d885..317503763314 100644 > --- a/include/linux/irqdomain.h > +++ b/include/linux/irqdomain.h > @@ -452,6 +452,9 @@ static inline int irq_domain_alloc_irqs(struct irq_domain *domain, > return -1; > } > > +static inline void irq_domain_free_irqs(unsigned int virq, > + unsigned int nr_irqs) { } > + > static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) > { > return false; > diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c > index f3ff1eb8dd09..caa6a63d26f0 100644 > --- a/kernel/irq/irqdomain.c > +++ b/kernel/irq/irqdomain.c > @@ -567,6 +567,7 @@ static void of_phandle_args_to_fwspec(struct of_phandle_args *irq_data, > unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec) > { > struct irq_domain *domain; > + struct irq_data *irq_data; > irq_hw_number_t hwirq; > unsigned int type = IRQ_TYPE_NONE; > int virq; > @@ -614,7 +615,11 @@ unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec) > * it now and return the interrupt number. > */ > if (irq_get_trigger_type(virq) == IRQ_TYPE_NONE) { > - irq_set_irq_type(virq, type); > + irq_data = irq_get_irq_data(virq); > + if (!irq_data) > + return 0; > + > + irqd_set_trigger_type(irq_data, type); > return virq; > } > > @@ -634,10 +639,18 @@ unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec) > return virq; > } > > - /* Set type if specified and different than the current one */ > - if (type != IRQ_TYPE_NONE && > - type != irq_get_trigger_type(virq)) > - irq_set_irq_type(virq, type); > + irq_data = irq_get_irq_data(virq); > + if (!irq_data) { > + if (irq_domain_is_hierarchy(domain)) > + irq_domain_free_irqs(virq, 1); > + else > + irq_dispose_mapping(virq); > + return 0; > + } > + > + /* Store trigger type */ > + irqd_set_trigger_type(irq_data, type); > + > return virq; > } > EXPORT_SYMBOL_GPL(irq_create_fwspec_mapping); > -- > 2.1.4 > -- Best Regards Masahiro Yamada -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html