--- zzzz-none-000/linux-2.6.39.4/arch/arm/kernel/entry-armv.S	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/arch/arm/kernel/entry-armv.S	2021-11-10 13:23:09.000000000 +0000
@@ -40,7 +40,34 @@
 	teq	r5, #0
 	movne	pc, r5
 #endif
-	arch_irq_handler_default
+1:	get_irqnr_and_base r0, r6, r5, lr
+	movne	r1, sp
+	@
+	@ routine called with r0 = irq number, r1 = struct pt_regs *
+	@
+	adrne	lr, 1b
+	bne	asm_do_IRQ
+
+#ifdef CONFIG_SMP
+	/*
+	 * XXX
+	 *
+	 * this macro assumes that irqstat (r6) and base (r5) are
+	 * preserved from get_irqnr_and_base above
+	 */
+	test_for_ipi r0, r6, r5, lr
+	movne	r0, sp
+	adrne	lr, 1b
+	bne	do_IPI
+
+#ifdef CONFIG_LOCAL_TIMERS
+	test_for_ltirq r0, r6, r5, lr
+	movne	r0, sp
+	adrne	lr, 1b
+	bne	do_local_timer
+#endif
+#endif
+	
 9997:
 	.endm