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The backlight part of fujitsu-laptop is only used by laptops which are incapable of using the standard ACPI video interface for handling brightness changes. Conversely, on laptops which are capable of using the latter, no vendor-specific ACPI calls should be made unless explicitly requested by the user. Bail out immediately from acpi_fujitsu_bl_add() unless using the vendor-specific interface was either explicitly requested by the user or automatically selected by the kernel. Signed-off-by: Michał Kępień <kernel@kempniu.pl> Reviewed-by: Jonathan Woithe <jwoithe@just42.net> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
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.