8478cd5a74
This wasn't really needed before; the main place this could race is with channel recovery, but (through potentially fragile means) shouldn't have been possible. However, a number of upcoming patches benefit from having better control over subdev init, necessitating some improvements here. - allows subdev/engine oneinit() without init() (host/fifo patches) - merges engine use locking/tracking into subdev, and extends it to fix some issues that will arise with future usage patterns (acr patches) Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.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 Restructured Text 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.