From: Daniel Drake <dsd@gentoo.org>
https://bugs.gentoo.org/show_bug.cgi?id=254150
Disclaimer: I know nothing about alpha!

Index: linux-2.6.28-gentoo/arch/alpha/kernel/Makefile
===================================================================
--- linux-2.6.28-gentoo.orig/arch/alpha/kernel/Makefile
+++ linux-2.6.28-gentoo/arch/alpha/kernel/Makefile
@@ -57,7 +57,7 @@ obj-$(CONFIG_ALPHA_TITAN)	+= core_titan.
 obj-$(CONFIG_ALPHA_WILDFIRE)	+= core_wildfire.o
 
 # Board support
-obj-$(CONFIG_ALPHA_ALCOR)	+= sys_alcor.o irq_i8259.o irq_srm.o
+obj-$(CONFIG_ALPHA_ALCOR)	+= sys_alcor.o irq_i8259.o
 obj-$(CONFIG_ALPHA_CABRIOLET)	+= sys_cabriolet.o irq_i8259.o irq_srm.o \
 				   ns87312.o
 obj-$(CONFIG_ALPHA_EB164)	+= sys_cabriolet.o irq_i8259.o irq_srm.o \
@@ -78,19 +78,19 @@ obj-$(CONFIG_ALPHA_JENSEN)	+= sys_jensen
 obj-$(CONFIG_ALPHA_MARVEL)	+= sys_marvel.o 
 obj-$(CONFIG_ALPHA_MIATA)	+= sys_miata.o irq_pyxis.o irq_i8259.o \
 				   es1888.o smc37c669.o
-obj-$(CONFIG_ALPHA_MIKASA)	+= sys_mikasa.o irq_i8259.o irq_srm.o
-obj-$(CONFIG_ALPHA_NAUTILUS)	+= sys_nautilus.o irq_i8259.o irq_srm.o
+obj-$(CONFIG_ALPHA_MIKASA)	+= sys_mikasa.o irq_i8259.o
+obj-$(CONFIG_ALPHA_NAUTILUS)	+= sys_nautilus.o irq_i8259.o
 obj-$(CONFIG_ALPHA_NORITAKE)	+= sys_noritake.o irq_i8259.o
 obj-$(CONFIG_ALPHA_RAWHIDE)	+= sys_rawhide.o irq_i8259.o
 obj-$(CONFIG_ALPHA_RUFFIAN)	+= sys_ruffian.o irq_pyxis.o irq_i8259.o
 obj-$(CONFIG_ALPHA_RX164)	+= sys_rx164.o irq_i8259.o
 obj-$(CONFIG_ALPHA_SABLE)	+= sys_sable.o
 obj-$(CONFIG_ALPHA_LYNX)	+= sys_sable.o
-obj-$(CONFIG_ALPHA_BOOK1)	+= sys_sio.o irq_i8259.o irq_srm.o ns87312.o
-obj-$(CONFIG_ALPHA_AVANTI)	+= sys_sio.o irq_i8259.o irq_srm.o ns87312.o
-obj-$(CONFIG_ALPHA_NONAME)	+= sys_sio.o irq_i8259.o irq_srm.o ns87312.o
-obj-$(CONFIG_ALPHA_P2K)		+= sys_sio.o irq_i8259.o irq_srm.o ns87312.o
-obj-$(CONFIG_ALPHA_XL)		+= sys_sio.o irq_i8259.o irq_srm.o ns87312.o
+obj-$(CONFIG_ALPHA_BOOK1)	+= sys_sio.o irq_i8259.o ns87312.o
+obj-$(CONFIG_ALPHA_AVANTI)	+= sys_sio.o irq_i8259.o ns87312.o
+obj-$(CONFIG_ALPHA_NONAME)	+= sys_sio.o irq_i8259.o ns87312.o
+obj-$(CONFIG_ALPHA_P2K)		+= sys_sio.o irq_i8259.o ns87312.o
+obj-$(CONFIG_ALPHA_XL)		+= sys_sio.o irq_i8259.o ns87312.o
 obj-$(CONFIG_ALPHA_SX164)	+= sys_sx164.o irq_pyxis.o irq_i8259.o \
 				   irq_srm.o smc37c669.o
 obj-$(CONFIG_ALPHA_TAKARA)	+= sys_takara.o irq_i8259.o ns87312.o
Index: linux-2.6.28-gentoo/arch/alpha/kernel/irq.c
===================================================================
--- linux-2.6.28-gentoo.orig/arch/alpha/kernel/irq.c
+++ linux-2.6.28-gentoo/arch/alpha/kernel/irq.c
@@ -159,3 +159,11 @@ handle_irq(int irq)
 	__do_IRQ(irq);
 	irq_exit();
 }
+
+void
+srm_device_interrupt(unsigned long vector)
+{
+	int irq = (vector - 0x800) >> 4;
+	handle_irq(irq);
+}
+
Index: linux-2.6.28-gentoo/arch/alpha/kernel/irq_srm.c
===================================================================
--- linux-2.6.28-gentoo.orig/arch/alpha/kernel/irq_srm.c
+++ linux-2.6.28-gentoo/arch/alpha/kernel/irq_srm.c
@@ -71,9 +71,3 @@ init_srm_irqs(long max, unsigned long ig
 	}
 }
 
-void 
-srm_device_interrupt(unsigned long vector)
-{
-	int irq = (vector - 0x800) >> 4;
-	handle_irq(irq);
-}