1 files changed, 11 insertions, 1 deletions

diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index bd9e272d55e9..32b161972fad 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -172,7 +172,17 @@ void note_interrupt(unsigned int irq, struct irq_desc *desc,
                     irqreturn_t action_ret)
 {
         if (unlikely(action_ret != IRQ_HANDLED)) {
-                desc->irqs_unhandled++;
+                /*
+                 * If we are seeing only the odd spurious IRQ caused by
+                 * bus asynchronicity then don't eventually trigger an error,
+                 * otherwise the couter becomes a doomsday timer for otherwise
+                 * working systems
+                 */
+                if (jiffies - desc->last_unhandled > HZ/10)
+                        desc->irqs_unhandled = 1;
+                else
+                        desc->irqs_unhandled++;
+                desc->last_unhandled = jiffies;
                 if (unlikely(action_ret != IRQ_NONE))
                         report_bad_irq(irq, desc, action_ret);
         }