irqdomain: Use irq_domain_get_of_node() instead of direct field access

The struct irq_domain contains a "struct device_node *" field
(of_node) that is almost the only link between the irqdomain
and the device tree infrastructure.

In order to prepare for the removal of that field, convert all
users to use irq_domain_get_of_node() instead.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-and-tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Graeme Gregory <graeme@xora.org.uk>
Cc: Jake Oshins <jakeo@microsoft.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Link: http://lkml.kernel.org/r/1444737105-31573-2-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
index 8c4467fad837..7b32255028fe 100644
--- a/arch/arm/mach-imx/gpc.c
+++ b/arch/arm/mach-imx/gpc.c
@@ -188,7 +188,7 @@ static int imx_gpc_domain_xlate(struct irq_domain *domain,
                                 unsigned long *out_hwirq,
                                 unsigned int *out_type)
 {
-        if (domain->of_node != controller)
+        if (irq_domain_get_of_node(domain) != controller)
                 return -EINVAL; /* Shouldn't happen, really... */
         if (intsize != 3)
                 return -EINVAL; /* Not GIC compliant */
@@ -223,7 +223,7 @@ static int imx_gpc_domain_alloc(struct irq_domain *domain,
                                               &imx_gpc_chip, NULL);
 
         parent_args = *args;
-        parent_args.np = domain->parent->of_node;
+        parent_args.np = irq_domain_get_of_node(domain->parent);
         return irq_domain_alloc_irqs_parent(domain, irq, nr_irqs, &parent_args);
 }