irq: simplify for_each_irq_desc() usage

[safe/jmp/linux-2.6] / include / linux / irqnr.h

diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
index c4a59c7..5504a5c 100644 (file)
--- a/include/linux/irqnr.h
+++ b/include/linux/irqnr.h
@@ -22,10 +22,14 @@ extern struct irq_desc *irq_to_desc(unsigned int irq);
 
 # define for_each_irq_desc(irq, desc)                                  \
        for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs;           \
-            irq++, desc = irq_to_desc(irq))
+            irq++, desc = irq_to_desc(irq))                            \
+               if (desc)
+
+
 # define for_each_irq_desc_reverse(irq, desc)                          \
        for (irq = nr_irqs - 1, desc = irq_to_desc(irq); irq >= 0;      \
-            irq--, desc = irq_to_desc(irq))
+            irq--, desc = irq_to_desc(irq))                            \
+               if (desc)
 
 #endif /* CONFIG_GENERIC_HARDIRQS */