A queued request cannot be modified anymore.
.. caution::
- For :ref:`memory-to-memory devices <codec>` you can use requests only for
+ For :ref:`memory-to-memory devices <mem2mem>` you can use requests only for
output buffers, not for capture buffers. Attempting to add a capture buffer
to a request will result in an ``EACCES`` error.
Example for a Codec Device
--------------------------
-For use-cases such as :ref:`codecs <codec>`, the request API can be used
+For use-cases such as :ref:`codecs <mem2mem>`, the request API can be used
to associate specific controls to
be applied by the driver for the OUTPUT buffer, allowing user-space
to queue many such buffers in advance. It can also take advantage of requests'