The ACPI fan device IDs are shared between the fan driver and the device power management code. The former is modular, so it needs to include the table of device IDs for module autoloading and the latter needs that list to avoid attaching the generic ACPI PM domain to fan devices (which doesn't make sense) possibly before the fan driver module is loaded. Unfortunately, that requires the list of fan device IDs to be updated in two places which is prone to mistakes, so put it into a symbol definition in a separate header file so there is only one copy of it in case it needs to be updated again in the future. Fixes: b9ea0bae260f ("ACPI: PM: Avoid attaching ACPI PM domain to certain devices") 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.
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