In commit a71b092a9c68685a270ebdde7b5986ba8787e575
__handle_domain_irq was introduced by Marc Zyngier.
It tests hwirq on zero and rejects it. At least
LPC32XX uses IRQ 0 as chained entry for SIC1. Thus
all SIC1 connected devices doesn't work just now.
This patch fixes it - not sure whether it is correct
way however.
---
kernel/irq/irqdesc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 99793b9..3c90794 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -381,7 +381,7 @@ int __handle_domain_irq(struct irq_domain *domain, unsigned int hwirq,
* Some hardware gives randomly wrong interrupts. Rather
* than crashing, do something sensible.
*/
- if (unlikely(!irq || irq >= nr_irqs)) {
+ if (unlikely(irq >= nr_irqs)) {
ack_bad_irq(irq);
ret = -EINVAL;
} else {
--
1.7.10.4