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tp->cp_cmd is supposed to reflect the current value of the CplusCmd register. Several (quite old) changes however directly change this register w/o updating tp->cp_cmd. Also we have places in the code reading this register where we could use the cached value. In addition: - Properly initialize tp->cmd with the register value. - In rtl_hw_start_8169 remove one setting of PCIMulRW because it's set unconditionally anyway a few lines later. - In rtl_hw_start_8168 properly mask out the INTT bits before setting INTT_1. So far we rely on both bits being zero. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.