1 files changed, 19 insertions, 3 deletions

diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 2c039c9b9383..886e80347b32 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -22,7 +22,7 @@
  */
 static struct lock_class_key irq_desc_lock_class;
 
-#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_HARDIRQS)
+#if defined(CONFIG_SMP)
 static void __init init_irq_default_affinity(void)
 {
         alloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT);
@@ -290,6 +290,22 @@ static int irq_expand_nr_irqs(unsigned int nr)
 
 #endif /* !CONFIG_SPARSE_IRQ */
 
+/**
+ * generic_handle_irq - Invoke the handler for a particular irq
+ * @irq:        The irq number to handle
+ *
+ */
+int generic_handle_irq(unsigned int irq)
+{
+        struct irq_desc *desc = irq_to_desc(irq);
+
+        if (!desc)
+                return -EINVAL;
+        generic_handle_irq_desc(irq, desc);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(generic_handle_irq);
+
 /* Dynamic interrupt handling */
 
 /**
@@ -311,6 +327,7 @@ void irq_free_descs(unsigned int from, unsigned int cnt)
         bitmap_clear(allocated_irqs, from, cnt);
         mutex_unlock(&sparse_irq_lock);
 }
+EXPORT_SYMBOL_GPL(irq_free_descs);
 
 /**
  * irq_alloc_descs - allocate and initialize a range of irq descriptors
@@ -351,6 +368,7 @@ err:
         mutex_unlock(&sparse_irq_lock);
         return ret;
 }
+EXPORT_SYMBOL_GPL(irq_alloc_descs);
 
 /**
  * irq_reserve_irqs - mark irqs allocated
@@ -430,7 +448,6 @@ unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
                         *per_cpu_ptr(desc->kstat_irqs, cpu) : 0;
 }
 
-#ifdef CONFIG_GENERIC_HARDIRQS
 unsigned int kstat_irqs(unsigned int irq)
 {
         struct irq_desc *desc = irq_to_desc(irq);
@@ -443,4 +460,3 @@ unsigned int kstat_irqs(unsigned int irq)
                 sum += *per_cpu_ptr(desc->kstat_irqs, cpu);
         return sum;
 }
-#endif /* CONFIG_GENERIC_HARDIRQS */