of: irq: Ignore disabled intc's when searching map

When searching the interrupt map, if a matched parent is disabled, just
ignore it and move on with the search.

This allows for specifying connection of a single device IRQ to
multiple interrupt controllers via the interrupt map schema. This change
allows for selection of the active interrupt controller via the already
existing status = "disabled" mechanism.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 9876963ed7b3..bf8026895c5e 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -217,6 +217,9 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
                                 goto fail;
                         }
 
+                        if (!of_device_is_available(newpar))
+                                match = 0;
+
                         /* Get #interrupt-cells and #address-cells of new
                          * parent
                          */