parisc: lay groundwork for killing __do_IRQ

Use proper accessors and handlers for generic irq cleanups. We just
call back into __do_IRQ through desc->handler now, and remove the
explicit calls.

Signed-off-by: Kyle McMartin <kyle@redhat.com>
diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c
index 46f503f..5854177 100644
--- a/drivers/parisc/eisa.c
+++ b/drivers/parisc/eisa.c
@@ -233,7 +233,7 @@
 	}
 	spin_unlock_irqrestore(&eisa_irq_lock, flags);
 
-	__do_IRQ(irq);
+	generic_handle_irq(irq);
    
 	spin_lock_irqsave(&eisa_irq_lock, flags);
 	/* unmask */
@@ -346,10 +346,10 @@
 	}
 	
 	/* Reserve IRQ2 */
-	irq_to_desc(2)->action = &irq2_action;
-	
+	setup_irq(2, &irq2_action);
 	for (i = 0; i < 16; i++) {
-		irq_to_desc(i)->chip = &eisa_interrupt_type;
+		set_irq_chip_and_handler(i, &eisa_interrupt_type,
+			parisc_do_IRQ);
 	}
 	
 	EISA_bus = 1;