[PATCH-next] mfd: ab8500: fix dt irq mapping

[Grygorii Strashko]

The AD8500 defines itself as interrupt-controller in DT,
but it doesn't assign DT node to IRQ domain when creates it.
As result, of_irq_xx() helpers don't work because they can't
find necessary IRQ domain.

Hence, fix it by assigning AD8500 core device DT node to IRQ
domain when it's created.

This patch fixes STE u8500 Snowball boot failure reported by Kevin Hilman
https://lkml.org/lkml/2014/5/27/624

Cc: Samuel Ortiz <sameo at linux.intel.com>
Cc: Lee Jones <lee.jones at linaro.org>
Cc: Rob Herring <robh at kernel.org>
Cc: Grant Likely <grant.likely at linaro.org>
Cc: Thierry Reding <thierry.reding at gmail.com>
Reported-and-tested-by: Kevin Hilman <khilman at linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko at ti.com>
---
 drivers/mfd/ab8500-core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index a8ee4a3..cf2e6a1 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -591,7 +591,7 @@ static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np)
 		num_irqs = AB8500_NR_IRQS;
 
 	/* If ->irq_base is zero this will give a linear mapping */
-	ab8500->domain = irq_domain_add_simple(NULL,
+	ab8500->domain = irq_domain_add_simple(ab8500->dev->of_node,
 			num_irqs, 0,
 			&ab8500_irq_ops, ab8500);
 
-- 
1.7.9.5