Merge tag 'powerpc-4.13-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...

[mirror_ubuntu-artful-kernel.git] / drivers / irqchip / irq-gic.c

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 1b1df4f770bdefe0a16e0109624801f8af90f1f7..d3e7c43718b82b9e7fb2191dedadab1950c3ac7d 100644 (file)
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -361,6 +361,7 @@ static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
                if (likely(irqnr > 15 && irqnr < 1020)) {
                        if (static_key_true(&supports_deactivate))
                                writel_relaxed(irqstat, cpu_base + GIC_CPU_EOI);
+                       isb();
                        handle_domain_irq(gic->domain, irqnr, regs);
                        continue;
                }
@@ -401,10 +402,12 @@ static void gic_handle_cascade_irq(struct irq_desc *desc)
                goto out;
 
        cascade_irq = irq_find_mapping(chip_data->domain, gic_irq);
-       if (unlikely(gic_irq < 32 || gic_irq > 1020))
+       if (unlikely(gic_irq < 32 || gic_irq > 1020)) {
                handle_bad_irq(desc);
-       else
+       } else {
+               isb();
                generic_handle_irq(cascade_irq);
+       }
 
  out:
        chained_irq_exit(chip, desc);
@@ -1027,8 +1030,11 @@ static int gic_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
        if (ret)
                return ret;
 
-       for (i = 0; i < nr_irqs; i++)
-               gic_irq_domain_map(domain, virq + i, hwirq + i);
+       for (i = 0; i < nr_irqs; i++) {
+               ret = gic_irq_domain_map(domain, virq + i, hwirq + i);
+               if (ret)
+                       return ret;
+       }
 
        return 0;
 }