1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
index f928795fd07a..cf90714a676d 100644
--- a/arch/arc/kernel/intc-arcv2.c
+++ b/arch/arc/kernel/intc-arcv2.c
@@ -75,10 +75,13 @@ void arc_init_IRQ(void)
          * 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.
+         * Also disable all IRQ lines so faulty external hardware won't
+         * trigger interrupt that kernel is not ready to handle.
          */
         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);
+                write_aux_reg(AUX_IRQ_ENABLE, 0);
         }
 
         /* setup status32, don't enable intr yet as kernel doesn't want */