alpha: kill off alpha_do_IRQ

Good riddance... Nuke a pile of redundant handlers that the
generic code takes care of as well.

Tested-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c
index 34abb5c..edad5f7 100644
--- a/arch/alpha/kernel/sys_dp264.c
+++ b/arch/alpha/kernel/sys_dp264.c
@@ -115,20 +115,6 @@
 	spin_unlock(&dp264_irq_lock);
 }
 
-static unsigned int
-dp264_startup_irq(unsigned int irq)
-{ 
-	dp264_enable_irq(irq);
-	return 0; /* never anything pending */
-}
-
-static void
-dp264_end_irq(unsigned int irq)
-{ 
-	if (!(irq_to_desc(irq)->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-		dp264_enable_irq(irq);
-}
-
 static void
 clipper_enable_irq(unsigned int irq)
 {
@@ -147,20 +133,6 @@
 	spin_unlock(&dp264_irq_lock);
 }
 
-static unsigned int
-clipper_startup_irq(unsigned int irq)
-{ 
-	clipper_enable_irq(irq);
-	return 0; /* never anything pending */
-}
-
-static void
-clipper_end_irq(unsigned int irq)
-{ 
-	if (!(irq_to_desc(irq)->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-		clipper_enable_irq(irq);
-}
-
 static void
 cpu_set_irq_affinity(unsigned int irq, cpumask_t affinity)
 {
@@ -200,23 +172,17 @@
 
 static struct irq_chip dp264_irq_type = {
 	.name		= "DP264",
-	.startup	= dp264_startup_irq,
-	.shutdown	= dp264_disable_irq,
-	.enable		= dp264_enable_irq,
-	.disable	= dp264_disable_irq,
-	.ack		= dp264_disable_irq,
-	.end		= dp264_end_irq,
+	.unmask		= dp264_enable_irq,
+	.mask		= dp264_disable_irq,
+	.mask_ack	= dp264_disable_irq,
 	.set_affinity	= dp264_set_affinity,
 };
 
 static struct irq_chip clipper_irq_type = {
 	.name		= "CLIPPER",
-	.startup	= clipper_startup_irq,
-	.shutdown	= clipper_disable_irq,
-	.enable		= clipper_enable_irq,
-	.disable	= clipper_disable_irq,
-	.ack		= clipper_disable_irq,
-	.end		= clipper_end_irq,
+	.unmask		= clipper_enable_irq,
+	.mask		= clipper_disable_irq,
+	.mask_ack	= clipper_disable_irq,
 	.set_affinity	= clipper_set_affinity,
 };
 
@@ -303,7 +269,7 @@
 	long i;
 	for (i = imin; i <= imax; ++i) {
 		irq_to_desc(i)->status |= IRQ_LEVEL;
-		set_irq_chip_and_handler(i, ops, alpha_do_IRQ);
+		set_irq_chip_and_handler(i, ops, handle_level_irq);
 	}
 }