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_takara.c b/arch/alpha/kernel/sys_takara.c
index dc3c232..f8a1e8a 100644
--- a/arch/alpha/kernel/sys_takara.c
+++ b/arch/alpha/kernel/sys_takara.c
@@ -60,28 +60,11 @@
 	takara_update_irq_hw(irq, mask);
 }
 
-static unsigned int
-takara_startup_irq(unsigned int irq)
-{
-	takara_enable_irq(irq);
-	return 0; /* never anything pending */
-}
-
-static void
-takara_end_irq(unsigned int irq)
-{
-	if (!(irq_to_desc(irq)->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-		takara_enable_irq(irq);
-}
-
 static struct irq_chip takara_irq_type = {
 	.name		= "TAKARA",
-	.startup	= takara_startup_irq,
-	.shutdown	= takara_disable_irq,
-	.enable		= takara_enable_irq,
-	.disable	= takara_disable_irq,
-	.ack		= takara_disable_irq,
-	.end		= takara_end_irq,
+	.unmask		= takara_enable_irq,
+	.mask		= takara_disable_irq,
+	.mask_ack	= takara_disable_irq,
 };
 
 static void
@@ -154,7 +137,7 @@
 
 	for (i = 16; i < 128; ++i) {
 		irq_to_desc(i)->status |= IRQ_LEVEL;
-		set_irq_chip_and_handler(i, &takara_irq_type, alpha_do_IRQ);
+		set_irq_chip_and_handler(i, &takara_irq_type, handle_level_irq);
 	}
 
 	common_init_isa_dma();