diff --git a/drivers/pnp/manager.c b/drivers/pnp/manager.c
index e758dd225576..c706dd2ddb02 100644
--- a/drivers/pnp/manager.c
+++ b/drivers/pnp/manager.c
@@ -47,7 +47,10 @@ static int pnp_assign_port(struct pnp_dev *dev, struct pnp_port *rule, int idx)
 		res->start += rule->align;
 		res->end = res->start + rule->size - 1;
 		if (res->start > rule->max || !rule->align) {
-			dev_dbg(&dev->dev, "  couldn't assign io %d\n", idx);
+			dev_dbg(&dev->dev, "  couldn't assign io %d "
+				"(min %#llx max %#llx)\n", idx,
+				(unsigned long long) rule->min,
+				(unsigned long long) rule->max);
 			return 0;
 		}
 	}
@@ -96,7 +99,10 @@ static int pnp_assign_mem(struct pnp_dev *dev, struct pnp_mem *rule, int idx)
 		res->start += rule->align;
 		res->end = res->start + rule->size - 1;
 		if (res->start > rule->max || !rule->align) {
-			dev_dbg(&dev->dev, "  couldn't assign mem %d\n", idx);
+			dev_dbg(&dev->dev, "  couldn't assign mem %d "
+				"(min %#llx max %#llx)\n", idx,
+				(unsigned long long) rule->min,
+				(unsigned long long) rule->max);
 			return 0;
 		}
 	}