arm/imx: fix return type of callback passed to of_irq_init()

The of_irq_init() expects the callback passed by .data of of_device_id
return 'int' instead of 'void'.  This patch fixes it to have
irq_init_cb() return the correct value, and in turn have the secondary
interrupt controller (gpio in this case) initialized properly and also
eliminate the error message 'of_irq_init: children remain, but no
parents' which was overlooked before.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 8bf5fa349484..eb7531bdfed7 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -36,7 +36,7 @@ static void __init imx6q_map_io(void)
         imx_scu_map_io();
 }
 
-static void __init imx6q_gpio_add_irq_domain(struct device_node *np,
+static int __init imx6q_gpio_add_irq_domain(struct device_node *np,
                                 struct device_node *interrupt_parent)
 {
         static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS -
@@ -44,6 +44,8 @@ static void __init imx6q_gpio_add_irq_domain(struct device_node *np,
 
         irq_domain_add_simple(np, gpio_irq_base);
         gpio_irq_base += 32;
+
+        return 0;
 }
 
 static const struct of_device_id imx6q_irq_match[] __initconst = {