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Commit 62861095dc3f40594958f45257f2551c1d7e2655

Authored by Lee Jones
1 parent e8b9acd26b
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

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>

Showing 1 changed file with 5 additions and 0 deletions Side-by-side Diff

include/linux/of_irq.h
Diff comments   View file @ 6286109
... ... @@ -83,6 +83,11 @@
83 83 {
84 84 return 0;
85 85 }
  86 +
  87 +static inline void *of_irq_find_parent(struct device_node *child)
  88 +{
  89 + return NULL;
  90 +}
86 91 #endif /* !CONFIG_OF */
87 92  
88 93 #endif /* __OF_IRQ_H */