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After commit18996f2db9(ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume) the status of ACPI events is not cleared any more when entering the ACPI S5 system state (power off) which causes some systems to power up immediately after turing off power in certain situations. That is a functional regression, so address it by making the code clear the status of all ACPI events again when entering S5 (for system-wide suspend or hibernation the clearing of the status of all events is not desirable, as it might cause the kernel to miss wakeup events sometimes). Fixes:18996f2db9(ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume) Reported-by: Takashi Iwai <tiwai@suse.de> Tested-by: Thomas Hänig <haenig@cosifan.de> Cc: 4.17+ <stable@vger.kernel.org> # 4.17+ 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.
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.