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The way these are called is not exactly symmetric as it is supposed to be: the former is called when tunnel is being activated and the latter is called when it is being released (not when it is being de-activated). Furthermore host-to-host (DMA) tunnels are abusing the ->deinit hook to clear out the credits. This makes it quite hard to follow what is being called and when. For these reasons rework the two "init" hooks to be called symmetrically and rename them accordingly. For the DMA one, add a new hook that is specifically used to run clean up for the tunnel when its memory is being released. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.