1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/pnp/manager.c b/drivers/pnp/manager.c
index 7ea9e1e28003..a20accb5ef8f 100644
--- a/drivers/pnp/manager.c
+++ b/drivers/pnp/manager.c
@@ -153,6 +153,15 @@ static int pnp_assign_irq(struct pnp_dev *dev, struct pnp_irq *rule, int idx)
                                 goto __add;
                 }
         }
+
+        if (rule->flags & IORESOURCE_IRQ_OPTIONAL) {
+                res->start = -1;
+                res->end = -1;
+                res->flags |= IORESOURCE_DISABLED;
+                dev_dbg(&dev->dev, "  irq %d disabled (optional)\n", idx);
+                goto __add;
+        }
+
         dev_dbg(&dev->dev, "  couldn't assign irq %d\n", idx);
         return -EBUSY;