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-rw-r--r--include/linux/irqnr.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
index 86af92e9e84c..de66e4e10406 100644
--- a/include/linux/irqnr.h
+++ b/include/linux/irqnr.h
@@ -20,11 +20,18 @@
# define for_each_irq_desc_reverse(irq, desc) \
for (irq = nr_irqs - 1; irq >= 0; irq--)
+
#else /* CONFIG_GENERIC_HARDIRQS */
+#include <asm/irq_vectors.h> /* need possible max_nr_irqs() */
+
extern int nr_irqs;
extern struct irq_desc *irq_to_desc(unsigned int irq);
+# ifndef max_nr_irqs
+# define max_nr_irqs(nr_cpus) NR_IRQS
+# endif
+
# define for_each_irq_desc(irq, desc) \
for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \
irq++, desc = irq_to_desc(irq)) \
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