[MIPS] use generic_handle_irq, handle_level_irq, handle_percpu_irq

Further incorporation of generic irq framework.  Replacing __do_IRQ()
by proper flow handler would make the irq handling path a bit simpler
and faster.

* use generic_handle_irq() instead of __do_IRQ().
* use handle_level_irq for obvious level-type irq chips.
* use handle_percpu_irq for irqs marked as IRQ_PER_CPU.
* setup .eoi routine for irq chips possibly used with handle_percpu_irq.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 3 insertions, 2 deletions

diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 824320281a3a..5f8835b4e84a 100644
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -352,7 +352,7 @@ static struct irq_chip bridge_irq_type = {
 
 void __devinit register_bridge_irq(unsigned int irq)
 {
-        set_irq_chip(irq, &bridge_irq_type);
+        set_irq_chip_and_handler(irq, &bridge_irq_type, handle_level_irq);
 }
 
 int __devinit request_bridge_irq(struct bridge_controller *bc)
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 86ba7fc10c38..e5441c3a0b07 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -190,6 +190,7 @@ static struct irq_chip rt_irq_type = {
         .mask           = disable_rt_irq,
         .mask_ack       = disable_rt_irq,
         .unmask         = enable_rt_irq,
+        .eoi            = enable_rt_irq,
         .end            = end_rt_irq,
 };
 
@@ -207,7 +208,7 @@ void __init plat_timer_setup(struct irqaction *irq)
         if (irqno < 0)
                 panic("Can't allocate interrupt number for timer interrupt");
 
-        set_irq_chip(irqno, &rt_irq_type);
+        set_irq_chip_and_handler(irqno, &rt_irq_type, handle_percpu_irq);
 
         /* over-write the handler, we use our own way */
         irq->handler = no_action;