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;