--- a/drivers/usb/serial/usb-serial.c	2004-11-11 13:50:05.706176976 -0600
+++ b/drivers/usb/serial/usb-serial.c	2004-11-11 13:51:15.749528768 -0600
@@ -463,6 +463,7 @@
 			kfree(port->bulk_in_buffer);
 			kfree(port->bulk_out_buffer);
 			kfree(port->interrupt_in_buffer);
+			kfree(port->interrupt_out_buffer);
 		}
 	}
 
@@ -805,6 +806,7 @@
 	kfree(port->bulk_in_buffer);
 	kfree(port->bulk_out_buffer);
 	kfree(port->interrupt_in_buffer);
+	kfree(port->interrupt_out_buffer);
 	kfree(port);
 }