1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/irq.h b/include/linux/irq.h
index ce8171bc6fac..8778ee993937 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -70,6 +70,7 @@ typedef	void (*irq_flow_handler_t)(unsigned int irq,
 #define IRQ_AFFINITY_SET        0x02000000      /* IRQ affinity was set from userspace*/
 #define IRQ_SUSPENDED           0x04000000      /* IRQ has gone through suspend sequence */
 #define IRQ_ONESHOT             0x08000000      /* IRQ is not unmasked after hardirq */
+#define IRQ_NESTED_THREAD       0x10000000      /* IRQ is nested into another, no own handler thread */
 
 #ifdef CONFIG_IRQ_PER_CPU
 # define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU)
@@ -386,6 +387,8 @@ set_irq_chained_handler(unsigned int irq,
         __set_irq_handler(irq, handle, 1, NULL);
 }
 
+extern void set_irq_nested_thread(unsigned int irq, int nest);
+
 extern void set_irq_noprobe(unsigned int irq);
 extern void set_irq_probe(unsigned int irq);