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d431dfb764
It turns out that there is a WMI object which controls the PWM2 device used for the keyboard backlight and that WMI object also provides some other useful functionality. The upcoming lenovo-yogabook-wmi driver will offer both backlight control and the other functionality, so there no longer is a need to have the lpss-pwm driver binding to PWM2 for backlight control; and this is now actually undesirable because this will cause both the WMI code and the lpss-pwm driver to poke at the same PWM controller. Drop the always-present quirk for the PWM2 ACPI-device, so that the lpss-pwm controller will no longer bind to it. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.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.