diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
index 4d3166f9bbc9db80c00e8c0bb273cdb17f2d1be8..f928795fd07a813e9f6f3e6d86f325b45561b3dc 100644
--- a/arch/arc/kernel/intc-arcv2.c
+++ b/arch/arc/kernel/intc-arcv2.c
@@ -32,7 +32,7 @@ struct bcr_irq_arcv2 {
  */
 void arc_init_IRQ(void)
 {
-	unsigned int tmp, irq_prio;
+	unsigned int tmp, irq_prio, i;
 	struct bcr_irq_arcv2 irq_bcr;
 
 	struct aux_irq_ctrl {
@@ -71,6 +71,16 @@ void arc_init_IRQ(void)
 		irq_prio + 1, ARCV2_IRQ_DEF_PRIO,
 		irq_bcr.firq ? " FIRQ (not used)":"");
 
+	/*
+	 * Set a default priority for all available interrupts to prevent
+	 * switching of register banks if Fast IRQ and multiple register banks
+	 * are supported by CPU.
+	 */
+	for (i = NR_EXCEPTIONS; i < irq_bcr.irqs + NR_EXCEPTIONS; i++) {
+		write_aux_reg(AUX_IRQ_SELECT, i);
+		write_aux_reg(AUX_IRQ_PRIORITY, ARCV2_IRQ_DEF_PRIO);
+	}
+
 	/* setup status32, don't enable intr yet as kernel doesn't want */
 	tmp = read_aux_reg(ARC_REG_STATUS32);
 	tmp |= STATUS_AD_MASK | (ARCV2_IRQ_DEF_PRIO << 1);