media: dvb uAPI docs: adjust return value ioctl descriptions

There are several issues on the return value for ioctls:

- Text is confusing;
- Some error codes don't exist;
- The non-generic error codes should come before the text
  that points to the generic error codes;
- Tables don't contain column size hints;
- Some references are not marked as such.

Correct them.

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

1 files changed, 10 insertions, 5 deletions

diff --git a/Documentation/media/uapi/dvb/dmx-start.rst b/Documentation/media/uapi/dvb/dmx-start.rst
index 641f3e0..36700e7 100644
--- a/Documentation/media/uapi/dvb/dmx-start.rst
+++ b/Documentation/media/uapi/dvb/dmx-start.rst
@@ -29,15 +29,16 @@ Description
 -----------
 
 This ioctl call is used to start the actual filtering operation defined
-via the ioctl calls DMX_SET_FILTER or DMX_SET_PES_FILTER.
+via the ioctl calls :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER`.
 
 
 Return Value
 ------------
 
-On success 0 is returned, on error -1 and the ``errno`` variable is set
-appropriately. The generic error codes are described at the
-:ref:`Generic Error Codes <gen-errors>` chapter.
+On success 0 is returned.
+
+On error -1 is returned, and the ``errno`` variable is set
+appropriately.
 
 .. tabularcolumns:: |p{2.5cm}|p{15.0cm}|
 
@@ -51,7 +52,7 @@ appropriately. The generic error codes are described at the
        -  ``EINVAL``
 
        -  Invalid argument, i.e. no filtering parameters provided via the
-	  DMX_SET_FILTER or DMX_SET_PES_FILTER functions.
+	  :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER` ioctls.
 
     -  .. row 2
 
@@ -61,3 +62,7 @@ appropriately. The generic error codes are described at the
 	  There are active filters filtering data from another input source.
 	  Make sure that these filters are stopped before starting this
 	  filter.
+
+
+The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.