1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
new file mode 100644
index 00000000000..95d2b74641f
--- /dev/null
+++ b/include/linux/irqnr.h
@@ -0,0 +1,38 @@
+#ifndef _LINUX_IRQNR_H
+#define _LINUX_IRQNR_H
+
+/*
+ * Generic irq_desc iterators:
+ */
+#ifdef __KERNEL__
+
+#ifndef CONFIG_GENERIC_HARDIRQS
+#include <asm/irq.h>
+# define nr_irqs		NR_IRQS
+
+# define for_each_irq_desc(irq, desc)		\
+	for (irq = 0; irq < nr_irqs; irq++)
+
+# define for_each_irq_desc_reverse(irq, desc)                          \
+	for (irq = nr_irqs - 1; irq >= 0; irq--)
+#else
+
+extern int nr_irqs;
+
+#ifndef CONFIG_SPARSE_IRQ
+
+struct irq_desc;
+# define for_each_irq_desc(irq, desc)		\
+	for (irq = 0, desc = irq_desc; irq < nr_irqs; irq++, desc++)
+# define for_each_irq_desc_reverse(irq, desc)                          \
+	for (irq = nr_irqs - 1, desc = irq_desc + (nr_irqs - 1);        \
+	    irq >= 0; irq--, desc--)
+#endif
+#endif
+
+#define for_each_irq_nr(irq)                   \
+       for (irq = 0; irq < nr_irqs; irq++)
+
+#endif /* __KERNEL__ */
+
+#endif