a2fc3c899b
All x86/ACPI kms drivers which register native/BACKLIGHT_RAW type backlight devices call acpi_video_backlight_use_native() now. This sets __acpi_video_get_backlight_type()'s internal static native_available flag. This makes the backlight_device_get_by_type(BACKLIGHT_RAW) check unnecessary. Relying on the cached native_available value not only is simpler, it will also work correctly in cases where then native backlight registration was skipped because of acpi_video_backlight_use_native() returning false. Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Hans de Goede <hdegoede@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.