[PATCH] of/irq: Provide struct device_node forward-declaration for!OF case

[Anton Vorontsov]

The patch fixes the following warnings:

  CC      drivers/power/bq24190_charger.o
  In file included from drivers/power/bq24190_charger.c:14:0:
  include/linux/of_irq.h:82:7: warning: âstruct device_nodeâ declared
  inside parameter list [enabled by default]
  include/linux/of_irq.h:82:7: warning: its scope is only this definition
  or declaration, which is probably not what you want [enabled by default]
  include/linux/of_irq.h:87:118: warning: âstruct device_nodeâ declared
  inside parameter list [enabled by default]

Signed-off-by: Anton Vorontsov <anton@xxxxxxxxxx>
---
 include/linux/of_irq.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 535cecf..988d5c9 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -78,6 +78,9 @@ extern void of_irq_init(const struct of_device_id *matches);
 #endif /* CONFIG_OF_IRQ */
 
 #else /* !CONFIG_OF */
+
+struct device_node;
+
 static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
 						int index)
 {
-- 
1.8.1.4
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