set_irq_wake_real was introduced in 2db873211ba47ef704c301f9ecf4a33413a0b649
and its only user is set_irq_wake.

Noticed-by: Ingo Oeser <ioe-lkml@rameria.de>
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
---
 kernel/irq/manage.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 3cfc0fe..4476cd0 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -217,7 +217,7 @@ void enable_irq(unsigned int irq)
 }
 EXPORT_SYMBOL(enable_irq);
 
-int set_irq_wake_real(unsigned int irq, unsigned int on)
+static int set_irq_wake_real(unsigned int irq, unsigned int on)
 {
 	struct irq_desc *desc = irq_desc + irq;
 	int ret = -ENXIO;
-- 
1.5.6.3

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