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Ben writes: Last round of FSI updates for 4.19 This adds a few fixes for things reported since the last merge, and the latch batch of changes pending for FSI for 4.19. That batch is a rather mechanical conversion of the misc devices into proper char devices. The misc devices were ill suited, the minor space for them is limited and we can have a lot of chips in a system creating FSI devices. This also allows us to better control (and fix) object lifetime getting rid of the bad devm_kzalloc() of the structures containing the devices etc... Finally, we add a chardev to the core FSI that provides raw CFAM access to FSI slaves as a replacement for the current "raw" binary sysfs file which will be ultimately deprecated and removed.
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.