Move Pci.scan() recursion into scan() itself

src/hulk/pci.d

@@ -32,6 +32,7 @@ struct Pci
         ubyte class_id;
         ubyte subclass_id;
         ubyte if_id;
+        bool multifunction;
 
         void initialize(Address address, ushort vendor_id, ushort device_id)
         {
@@ -49,14 +50,7 @@ struct Pci
             if (address.function_nr == 0u)
             {
                 uint reg3 = read_config_register(address, 3u);
-                if ((reg3 & (1u << 23u)) != 0u)
+                multifunction = (reg3 & (1u << 23u)) != 0u;
-                {
-                    /* Multi-function device found. */
-                    for (address.function_nr = 1u; address.function_nr < 8u; address.function_nr++)
-                    {
-                        scan(address);
-                    }
-                }
             }
         }
     }
@@ -133,6 +127,13 @@ struct Pci
             ushort device_id = (reg0 >> 16u) & 0xFFFFu;
             Device * device = A1.allocate!Device();
             device.initialize(address, vendor_id, device_id);
+            if (device.multifunction)
+            {
+                for (address.function_nr = 1u; address.function_nr < 8u; address.function_nr++)
+                {
+                    scan(address);
+                }
+            }
         }
     }