--- zzzz-none-000/linux-2.6.39.4/kernel/irq/irqdesc.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/kernel/irq/irqdesc.c	2021-11-10 13:23:10.000000000 +0000
@@ -7,6 +7,14 @@
  * Detailed information is available in Documentation/DocBook/genericirq
  *
  */
+/******************************************************************
+ 
+ Includes Intel Corporation's changes/modifications dated: 07/2011.
+ Changed/modified portions - Copyright(c) 2011, Intel Corporation. 
+
+******************************************************************/
+
+
 #include <linux/irq.h>
 #include <linux/slab.h>
 #include <linux/module.h>
@@ -14,7 +22,9 @@
 #include <linux/kernel_stat.h>
 #include <linux/radix-tree.h>
 #include <linux/bitmap.h>
-
+#ifdef CONFIG_INTEL_IRQ_THREAD_CHANGE_PRIORITY
+#include <linux/sched.h>
+#endif
 #include "internals.h"
 
 /*
@@ -89,6 +99,10 @@
 	for_each_possible_cpu(cpu)
 		*per_cpu_ptr(desc->kstat_irqs, cpu) = 0;
 	desc_smp_init(desc, node);
+#ifdef CONFIG_INTEL_IRQ_THREAD_CHANGE_PRIORITY
+	desc->sched_priority = MAX_USER_RT_PRIO/2;
+	desc->policy = SCHED_FIFO;
+#endif
 }
 
 int nr_irqs = NR_IRQS;
@@ -243,6 +257,11 @@
 		.lock		= __RAW_SPIN_LOCK_UNLOCKED(irq_desc->lock),
 	}
 };
+#ifdef CONFIG_ARCH_GEN3
+#ifdef CONFIG_SMP
+EXPORT_SYMBOL(irq_desc);
+#endif
+#endif
 
 int __init early_irq_init(void)
 {
@@ -270,6 +289,11 @@
 {
 	return (irq < NR_IRQS) ? irq_desc + irq : NULL;
 }
+#ifdef CONFIG_ARCH_GEN3
+#ifdef CONFIG_SMP
+EXPORT_SYMBOL(irq_to_desc);
+#endif
+#endif
 
 static void free_desc(unsigned int irq)
 {
@@ -309,6 +333,9 @@
 	bitmap_clear(allocated_irqs, from, cnt);
 	mutex_unlock(&sparse_irq_lock);
 }
+#ifdef CONFIG_ARCH_GEN3
+EXPORT_SYMBOL_GPL(irq_free_descs);
+#endif
 
 /**
  * irq_alloc_descs - allocate and initialize a range of irq descriptors
@@ -349,6 +376,9 @@
 	mutex_unlock(&sparse_irq_lock);
 	return ret;
 }
+#ifdef CONFIG_ARCH_GEN3
+EXPORT_SYMBOL_GPL(irq_alloc_descs);
+#endif
 
 /**
  * irq_reserve_irqs - mark irqs allocated