3 files changed, 31 insertions, 1 deletions

diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 5f3e2baefca9..8fee06625c37 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -91,6 +91,9 @@ config GENERIC_MSI_IRQ_DOMAIN
         select IRQ_DOMAIN_HIERARCHY
         select GENERIC_MSI_IRQ
 
+config IRQ_MSI_IOMMU
+        bool
+
 config HANDLE_DOMAIN_IRQ
         bool
 
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 51128bea3846..29d6c7d070b4 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -1459,6 +1459,33 @@ int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on)
         return -ENOSYS;
 }
 EXPORT_SYMBOL_GPL(irq_chip_set_wake_parent);
+
+/**
+ * irq_chip_request_resources_parent - Request resources on the parent interrupt
+ * @data:       Pointer to interrupt specific data
+ */
+int irq_chip_request_resources_parent(struct irq_data *data)
+{
+        data = data->parent_data;
+
+        if (data->chip->irq_request_resources)
+                return data->chip->irq_request_resources(data);
+
+        return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(irq_chip_request_resources_parent);
+
+/**
+ * irq_chip_release_resources_parent - Release resources on the parent interrupt
+ * @data:       Pointer to interrupt specific data
+ */
+void irq_chip_release_resources_parent(struct irq_data *data)
+{
+        data = data->parent_data;
+        if (data->chip->irq_release_resources)
+                data->chip->irq_release_resources(data);
+}
+EXPORT_SYMBOL_GPL(irq_chip_release_resources_parent);
 #endif
 
 /**
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 9ed29e4a7dbf..a453e229f99c 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -1297,7 +1297,7 @@ int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
 /**
  * __irq_domain_alloc_irqs - Allocate IRQs from domain
  * @domain:     domain to allocate from
- * @irq_base:   allocate specified IRQ nubmer if irq_base >= 0
+ * @irq_base:   allocate specified IRQ number if irq_base >= 0
  * @nr_irqs:    number of IRQs to allocate
  * @node:       NUMA node id for memory allocation
  * @arg:        domain specific argument