diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
index cd11341..033b087 100644
--- a/drivers/irqchip/irq-crossbar.c
+++ b/drivers/irqchip/irq-crossbar.c
@@ -158,11 +158,17 @@ static void crossbar_domain_free(struct irq_domain *domain, unsigned int virq,
 	for (i = 0; i < nr_irqs; i++) {
 		struct irq_data *d = irq_domain_get_irq_data(domain, virq + i);
 
+		/*
+		 * irq_map[] is indexed by GIC SPI number. The parent domain's
+		 * hwirq contains the GIC interrupt number (GIC SPI +
+		 * GIC_IRQ_START).
+		 */
+		cb->irq_map[d->parent_data->hwirq - GIC_IRQ_START] = IRQ_FREE;
+		cb->write(d->parent_data->hwirq - GIC_IRQ_START, cb->safe_map);
 		irq_domain_reset_irq_data(d);
-		cb->irq_map[d->hwirq] = IRQ_FREE;
-		cb->write(d->hwirq, cb->safe_map);
 	}
 	raw_spin_unlock(&cb->lock);
+	irq_domain_free_irqs_parent(domain, virq, nr_irqs);
 }
 
 static int crossbar_domain_translate(struct irq_domain *d,
diff --git a/drivers/irqchip/irq-imgpdc.c b/drivers/irqchip/irq-imgpdc.c
index e9ef2f5..4feef4a 100644
--- a/drivers/irqchip/irq-imgpdc.c
+++ b/drivers/irqchip/irq-imgpdc.c
@@ -378,6 +378,7 @@ static int pdc_intc_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "cannot add IRQ domain\n");
 		return -ENOMEM;
 	}
+	priv->domain->flags |= IRQ_DOMAIN_FLAG_DESTROY_GC;
 
 	/*
 	 * Set up 2 generic irq chips with 2 chip types.
@@ -465,6 +466,11 @@ static void pdc_intc_remove(struct platform_device *pdev)
 {
 	struct pdc_intc_priv *priv = platform_get_drvdata(pdev);
 
+	for (unsigned int i = 0; i < priv->nr_perips; ++i)
+		irq_set_chained_handler_and_data(priv->perip_irqs[i], NULL, NULL);
+
+	irq_set_chained_handler_and_data(priv->syswake_irq, NULL, NULL);
+
 	irq_domain_remove(priv->domain);
 }
 
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 3cafa40..903be72 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -591,7 +591,7 @@ void msi_device_destroy_sysfs(struct device *dev)
 	msi_for_each_desc(desc, dev, MSI_DESC_ALL)
 		msi_sysfs_remove_desc(dev, desc);
 }
-#endif /* CONFIG_PCI_MSI_ARCH_FALLBACK || CONFIG_PCI_XEN */
+#endif /* CONFIG_PCI_MSI_ARCH_FALLBACKS || CONFIG_PCI_XEN */
 #else /* CONFIG_SYSFS */
 static inline int msi_sysfs_create_group(struct device *dev) { return 0; }
 static inline int msi_sysfs_populate_desc(struct device *dev, struct msi_desc *desc) { return 0; }