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-rw-r--r--include/linux/irq.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index a32b47fbf874..95f4f66f95f3 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -940,4 +940,7 @@ static inline u32 irq_reg_readl(struct irq_chip_generic *gc,
return readl(gc->reg_base + reg_offset);
}
+/* Contrary to Linux irqs, for hardware irqs the irq number 0 is valid */
+#define INVALID_HWIRQ (~0UL)
+
#endif /* _LINUX_IRQ_H */