USB: report submission of active URBs
This patch (as1633) changes slightly the way usbcore handled
submissions of URBs that are already active. It will now return
-EBUSY rather than -EINVAL, and it will call WARN_ONCE to draw
people's attention to the bug.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/Documentation/usb/error-codes.txt b/Documentation/usb/error-codes.txt
index 8d1e2a9..9c3eb84 100644
--- a/Documentation/usb/error-codes.txt
+++ b/Documentation/usb/error-codes.txt
@@ -21,6 +21,8 @@
USB-specific:
+-EBUSY The URB is already active.
+
-ENODEV specified USB-device or bus doesn't exist
-ENOENT specified interface or endpoint does not exist or