genirq: Prevent access beyond allocated_irqs bitmap

[mv-sheeva.git] / kernel / irq / internals.h

diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 4571ae7e085ac95ad6affb1f31d802f32064665e..99c3bc8a6fb464f1e19a00dc6e1959cb9e777b5e 100644 (file)
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -3,6 +3,12 @@
  */
 #include <linux/irqdesc.h>
 
+#ifdef CONFIG_SPARSE_IRQ
+# define IRQ_BITMAP_BITS       (NR_IRQS + 8196)
+#else
+# define IRQ_BITMAP_BITS       NR_IRQS
+#endif
+
 extern int noirqdebug;
 
 #define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data)