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[ Upstream commit 737c3a09dcf69ba2814f3674947ccaec1861c985 ] In some places in the ACPI device properties handling code, it is unclear why the code is what it is. Some assumptions are not documented and some pieces of code are based on knowledge that is not mentioned anywhere. Add code comments explaining these things. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Tested-by: Sakari Ailus <sakari.ailus@linux.intel.com> Stable-dep-of: baf60d5cb8bc ("ACPI: property: Do not pass NULL handles to acpi_attach_data()") Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.