return;
 }
 
-static inline void pb1200_mask_and_ack_irq(unsigned int irq_nr)
-{
-       pb1200_disable_irq( irq_nr );
-}
-
-static void pb1200_end_irq(unsigned int irq_nr)
-{
-       if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))) {
-               pb1200_enable_irq(irq_nr);
-       }
-}
-
 static struct irq_chip external_irq_type =
 {
 #ifdef CONFIG_MIPS_PB1200
-       "Pb1200 Ext",
+       .name = "Pb1200 Ext",
 #endif
 #ifdef CONFIG_MIPS_DB1200
-       "Db1200 Ext",
+       .name = "Db1200 Ext",
 #endif
-       pb1200_startup_irq,
-       pb1200_shutdown_irq,
-       pb1200_enable_irq,
-       pb1200_disable_irq,
-       pb1200_mask_and_ack_irq,
-       pb1200_end_irq,
-       NULL
+       .startup  = pb1200_startup_irq,
+       .shutdown = pb1200_shutdown_irq,
+       .ack      = pb1200_disable_irq,
+       .mask     = pb1200_disable_irq,
+       .mask_ack = pb1200_disable_irq,
+       .unmask   = pb1200_enable_irq,
 };
 
 void _board_init_irq(void)
 
        for (irq_nr = PB1200_INT_BEGIN; irq_nr <= PB1200_INT_END; irq_nr++)
        {
-               irq_desc[irq_nr].chip = &external_irq_type;
+               set_irq_chip_and_handler(irq_nr, &external_irq_type,
+                                        handle_level_irq);
                pb1200_disable_irq(irq_nr);
        }