diff mbox

[05/32] of/irq: Create stub for of_irq_find_parent when !CONFIG_OF

Message ID 1348143170-2130-6-git-send-email-lee.jones@linaro.org
State Accepted
Commit 62861095dc3f40594958f45257f2551c1d7e2655
Headers show

Commit Message

Lee Jones Sept. 20, 2012, 12:12 p.m. UTC 
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>
---
 include/linux/of_irq.h |    5 +++++
 1 file changed, 5 insertions(+)
diff mbox

Patch

diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 1717cd9..b8e2411 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 */