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The era of hand-rolled HIWORD_UPDATE macros is over, at least for those drivers that use constant masks. Remove this driver's HIWORD_UPDATE macro, and replace all instances of it with (hopefully) equivalent FIELD_PREP_WM16 instances. To do this, a few of the defines are being adjusted, as FIELD_PREP_WM16 shifts up the value for us. This gets rid of the icky update(mask, mask) shenanigans. The benefit of using FIELD_PREP_WM16 is that it does more checking of the input, hopefully catching errors. In practice, a shared definition makes code more readable than several different flavours of the same macro, and the shifted value helps as well. I do not have the hardware that uses this particular driver, so it's compile-tested only as far as my own testing goes. Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.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.