sparc32: introduce build_device_irq

build_device_irq() is used to encapsulate the plaform
specific details when we build an irq.
For now the default is a simple 1:1 but sun4d differs.
This patch refactors functionality - but does not change
the existing functionality.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index b80b8bf0bf00..7c93df4099cb 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -582,6 +582,12 @@ int probe_irq_off(unsigned long mask)
 }
 EXPORT_SYMBOL(probe_irq_off);
 
+static unsigned int build_device_irq(struct platform_device *op,
+                                     unsigned int real_irq)
+{
+        return real_irq;
+}
+
 /* djhr
  * This could probably be made indirect too and assigned in the CPU
  * bits of the code. That would be much nicer I think and would also
@@ -592,6 +598,8 @@ EXPORT_SYMBOL(probe_irq_off);
 
 void __init init_IRQ(void)
 {
+        sparc_irq_config.build_device_irq = build_device_irq;
+
         switch (sparc_cpu_model) {
         case sun4c:
         case sun4: