[MIPS] Alchemy: Nuke homebrew setup_irq(), it's broken and unnecessary.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/au1000/common/irq.c

@@ -318,38 +318,6 @@ static struct irq_chip level_irq_type = {
 	.end		= end_irq,
 };
 
-#ifdef CONFIG_PM
-void startup_match20_interrupt(irq_handler_t handler)
-{
-	struct irq_desc *desc = &irq_desc[AU1000_TOY_MATCH2_INT];
-
-	static struct irqaction action;
-	memset(&action, 0, sizeof(struct irqaction));
-
-	/*
-	 * This is a big problem.... since we didn't use request_irq
-	 * when kernel/irq.c calls probe_irq_xxx this interrupt will
-	 * be probed for usage. This will end up disabling the device :(
-	 * Give it a bogus "action" pointer -- this will keep it from
-	 * getting auto-probed!
-	 *
-	 * By setting the status to match that of request_irq() we
-	 * can avoid it.  --cgray
-	*/
-	action.dev_id = handler;
-	action.flags = IRQF_DISABLED;
-	cpus_clear(action.mask);
-	action.name = "Au1xxx TOY";
-	action.handler = handler;
-	action.next = NULL;
-
-	desc->action = &action;
-	desc->status &= ~(IRQ_DISABLED | IRQ_AUTODETECT | IRQ_WAITING | IRQ_INPROGRESS);
-
-	local_enable_irq(AU1000_TOY_MATCH2_INT);
-}
-#endif
-
 static void __init setup_local_irq(unsigned int irq_nr, int type, int int_req)
 {
 	unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;

arch/mips/au1000/common/time.c

@@ -67,7 +67,7 @@ static DEFINE_SPINLOCK(time_lock);
 unsigned long wtimer;
 
 #ifdef CONFIG_PM
-irqreturn_t counter0_irq(int irq, void *dev_id)
+static irqreturn_t counter0_irq(int irq, void *dev_id)
 {
 	unsigned long pc0;
 	int time_elapsed;
@@ -117,6 +117,13 @@ irqreturn_t counter0_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+struct irqaction counter0_action = {
+	.handler	= counter0_irq,
+	.flags		= IRQF_DISABLED,
+	.name		= "alchemy-toy",
+	.dev_id		= NULL,
+};
+
 /* When we wakeup from sleep, we have to "catch up" on all of the
  * timer ticks we have missed.
  */
@@ -280,7 +287,7 @@ void __init plat_timer_setup(struct irqaction *irq)
 		au_writel(last_match20 + MATCH20_INC, SYS_TOYMATCH2);
 		au_sync();
 		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_M20);
-		startup_match20_interrupt(counter0_irq);
+		setup_irq(AU1000_TOY_MATCH2_INT, &counter0_action);
 
 		/* We can use the real 'wait' instruction.
 		*/