media: gen-errors.rst: document ENXIO error code

This error can be produced at least at the DVB subsystem.

As it is generic enough, document it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/media/uapi/gen-errors.rst b/Documentation/media/uapi/gen-errors.rst
index d51f672..689d3b1 100644 (file)
--- a/Documentation/media/uapi/gen-errors.rst
+++ b/Documentation/media/uapi/gen-errors.rst
@@ -80,6 +80,11 @@ Generic Error Codes
           a hardware device. This could indicate broken or flaky hardware.
          It's a 'Something is wrong, I give up!' type of error.
 
+    -  - ``ENXIO``
+
+       -  No device corresponding to this device special file exists.
+
+
 .. note::
 
   #. This list is not exhaustive; ioctls may return other error codes.