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Registering an ACPI driver does not mean the device it handles has to exist. As the code which syncs backlight power status uses call_fext_func(), it needs the FUJ02E3 ACPI device to be present, so ensure that code is only run once the FUJ02E3 device is detected. Signed-off-by: Michał Kępień <kernel@kempniu.pl> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-and-tested-by: Jonathan Woithe <jwoithe@just42.net>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.