--- zzzz-none-000/linux-3.10.107/kernel/irq/manage.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/kernel/irq/manage.c	2021-11-10 11:53:56.000000000 +0000
@@ -7,6 +7,12 @@
  * This file contains driver APIs to the irq subsystem.
  */
 
+/**
+ * Some part of this file is modified by Ikanos Communications. 
+ *
+ * Copyright (C) 2013-2014 Ikanos Communications.
+ */ 
+
 #define pr_fmt(fmt) "genirq: " fmt
 
 #include <linux/irq.h>
@@ -21,6 +27,10 @@
 
 #include "internals.h"
 
+#if defined (CONFIG_FUSIV_VX185) && defined (CONFIG_CPU_MIPSR2_IRQ_VI)
+#include <asm/mach-fusiv/vx185_int.h>
+#endif
+
 #ifdef CONFIG_IRQ_FORCED_THREADING
 __read_mostly bool force_irqthreads;
 
@@ -1341,6 +1351,19 @@
 #endif
 
 	kfree(__free_irq(irq, dev_id));
+#if defined (CONFIG_FUSIV_VX185) && defined(CONFIG_CPU_MIPSR2_IRQ_VI)
+        if(cpu_has_vint) {
+            struct irq_desc *idesc;
+            struct irq_data *idata;
+
+            idesc = irq_to_desc(((fusiv_irq_params_t *) dev_id)->ipc_src );
+            idata = irq_desc_get_irq_data(idesc);
+            if(dev_id != NULL)
+                shutdown_ipc_src(idata);
+            else
+                printk(KERN_ERR "%s: ERROR unable to free ipc source...\n", __FUNCTION__);
+    }
+#endif /* CONFIG_FUSIV_VX185 && CONFIG_CPU_MIPSR2_IRQ_VI */
 }
 EXPORT_SYMBOL(free_irq);
 
@@ -1453,6 +1476,18 @@
 		enable_irq(irq);
 	}
 #endif
+#if defined(CONFIG_FUSIV_VX185) && defined (CONFIG_CPU_MIPSR2_IRQ_VI)
+            if(cpu_has_vint) {
+                struct irq_desc *idesc;
+                struct irq_data *idata;
+
+                printk("\nThe devId registered is %s ipc_src: %d \n",devname, ((fusiv_irq_params_t *) dev_id)->ipc_src);
+                idesc = irq_to_desc(((fusiv_irq_params_t *) dev_id)->ipc_src );
+                idata = irq_desc_get_irq_data(idesc);
+                if (!retval)
+                    startup_ipc_src(idata);
+            }
+#endif /* CONFIG_FUSIV_VX185 && CONFIG_CPU_MIPSR2_IRQ_VI */
 	return retval;
 }
 EXPORT_SYMBOL(request_threaded_irq);
@@ -1494,6 +1529,19 @@
 }
 EXPORT_SYMBOL_GPL(request_any_context_irq);
 
+void irq_set_pending(unsigned int irq)
+{       
+	struct irq_desc *desc = irq_to_desc(irq);
+	unsigned long flags;
+
+	if (desc) {
+		raw_spin_lock_irqsave(&desc->lock, flags);
+		desc->istate |= IRQS_PENDING;
+		raw_spin_unlock_irqrestore(&desc->lock, flags);
+	}
+}
+EXPORT_SYMBOL_GPL(irq_set_pending);
+
 void enable_percpu_irq(unsigned int irq, unsigned int type)
 {
 	unsigned int cpu = smp_processor_id();