diff --git a/drivers/staging/cpc-usb/TODO b/drivers/staging/cpc-usb/TODO
index 000e8bbc6188..9b1752fb9cd7 100644
--- a/drivers/staging/cpc-usb/TODO
+++ b/drivers/staging/cpc-usb/TODO
@@ -5,5 +5,6 @@ kernel:
 	- remove proc code
 	- tie into CAN socket interfaces if possible
 	- figure out sane userspace api
+	- use linux's error codes
 
 Send patches to Greg Kroah-Hartman <greg@kroah.com>