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Date:   Wed, 26 Jun 2019 11:28:59 -0600
From:   Jonathan Corbet <>
Cc:     Mauro Carvalho Chehab <>,
        Jani Nikula <>,, Jonathan Corbet <>
Subject: [PATCH v3 4/4] docs: Note that :c:func: should no longer be used

Now that we can mark up function() automatically, there is no reason to use
:c:func: and every reason to avoid it.  Adjust the documentation to reflect
that fact.

Signed-off-by: Jonathan Corbet <>
 Documentation/doc-guide/sphinx.rst | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/Documentation/doc-guide/sphinx.rst b/Documentation/doc-guide/sphinx.rst
index e60a56640c63..f71ddd592aaa 100644
--- a/Documentation/doc-guide/sphinx.rst
+++ b/Documentation/doc-guide/sphinx.rst
@@ -241,11 +241,14 @@ The C domain of the kernel-doc has some additional features. E.g. you can
 The func-name (e.g. ioctl) remains in the output but the ref-name changed from
 ``ioctl`` to ``VIDIOC_LOG_STATUS``. The index entry for this function is also
-changed to ``VIDIOC_LOG_STATUS`` and the function can now referenced by:
-.. code-block:: rst
-     :c:func:`VIDIOC_LOG_STATUS`
+changed to ``VIDIOC_LOG_STATUS``.
+Please note that there is no need to use ``c:func:`` to generate cross
+references to function documentation.  Due to some Sphinx extension magic,
+the documentation build system will automatically turn a reference to
+``function()`` into a cross reference if an index entry for the given
+function name exists.  If you see ``c:func:`` use in a kernel document,
+please feel free to remove it.
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