[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>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c
index 3b7cfa407e87..be5ac23d3812 100644
--- a/arch/mips/kernel/irq_cpu.c
+++ b/arch/mips/kernel/irq_cpu.c
@@ -62,6 +62,7 @@ static struct irq_chip mips_cpu_irq_controller = {
         .mask           = mask_mips_irq,
         .mask_ack       = mask_mips_irq,
         .unmask         = unmask_mips_irq,
+        .eoi            = unmask_mips_irq,
         .end            = mips_cpu_irq_end,
 };
 
@@ -104,6 +105,7 @@ static struct irq_chip mips_mt_cpu_irq_controller = {
         .mask           = mask_mips_mt_irq,
         .mask_ack       = mips_mt_cpu_irq_ack,
         .unmask         = unmask_mips_mt_irq,
+        .eoi            = unmask_mips_mt_irq,
         .end            = mips_mt_cpu_irq_end,
 };
 
@@ -124,7 +126,8 @@ void __init mips_cpu_irq_init(int irq_base)
                         set_irq_chip(i, &mips_mt_cpu_irq_controller);
 
         for (i = irq_base + 2; i < irq_base + 8; i++)
-                set_irq_chip(i, &mips_cpu_irq_controller);
+                set_irq_chip_and_handler(i, &mips_cpu_irq_controller,
+                                         handle_level_irq);
 
         mips_cpu_irq_base = irq_base;
 }