path: root/include/linux/of_irq.h
diff options
authorLee Jones <lee.jones@linaro.org>2012-08-08 13:44:59 +0100
committerLee Jones <lee.jones@linaro.org>2012-09-20 12:32:30 +0200
commit62861095dc3f40594958f45257f2551c1d7e2655 (patch)
treebbc96dc3be49787d188a153ed39a25a1cdad1a5b /include/linux/of_irq.h
parente8b9acd26bbb3f05b9d7fbb8b439441eb328e51d (diff)
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>
Diffstat (limited to 'include/linux/of_irq.h')
1 files changed, 5 insertions, 0 deletions
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 */