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[ Upstream commit 8b3800256abad20e91c2698607f9b28591407b19 ] Setting the fan speed is only valid in manual mode; it is not possible to set the fan's speed in automatic mode. Return error when attempting to set the fan speed in automatic mode. Signed-off-by: Xing Tong Wu <xingtong.wu@siemens.com> Link: https://lore.kernel.org/r/20231121081604.2499-3-xingtong_wu@163.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.