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Calling fan related SMM functions implemented by Dell BIOS firmware on Dell Inspiron 7720 freeze kernel for about 500ms. Until Dell fixes it we need to disable fan support for Dell Inspiron 7720 as it makes system unusable. Via "force" module param fan support can be enabled. Reported-by: vova7890@mail.ru Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751 Cc: stable@vger.kernel.org # v4.0+, will need backport Signed-off-by: Guenter Roeck <linux@roeck-us.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.