From: Lee Jones <lee.jones@linaro.org>
Date: Wed, 8 Aug 2012 12:44:59 +0000 (+0100)
Subject: of/irq: Create stub for of_irq_find_parent when !CONFIG_OF
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=62861095dc3f40594958f45257f2551c1d7e2655;p=linux-beck.git

of/irq: Create stub for of_irq_find_parent when !CONFIG_OF

of_irq_find_parent is a handy function to use outside the confines of
the Open Firmware subsystem. One such use-case is when the IRQ Domain
wishes to find an IRQ domain for a given device node. Currently it can
not take any notice of the 'interrupt-parent' property. Instead it
just uses the first IRQ controller as it climbs the Device Tree. If
we were to use this as a precursor the resultant controller is more
likely to be correct.

Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---

diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 1717cd935e1c..b8e241125201 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -83,6 +83,11 @@ static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
 {
 	return 0;
 }
+
+static inline void *of_irq_find_parent(struct device_node *child)
+{
+	return NULL;
+}
 #endif /* !CONFIG_OF */
 
 #endif /* __OF_IRQ_H */