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[ Upstream commit501debd4aa] Both the PCI bus type and the ACPI PM domain avoid resuming runtime-suspended devices with DPM_FLAG_SMART_SUSPEND set during hibernation (before creating the snapshot image of system memory), but that turns out to be a mistake. It leads to functional issues and adds complexity that's hard to justify. For this reason, resume all runtime-suspended PCI devices and all devices in the ACPI PM domains before creating a snapshot image of system memory during hibernation. Fixes:05087360fd(ACPI / PM: Take SMART_SUSPEND driver flag into account) Fixes:c4b65157ae(PCI / PM: Take SMART_SUSPEND driver flag into account) Link: https://lore.kernel.org/linux-acpi/917d4399-2e22-67b1-9d54-808561f9083f@uwyo.edu/T/#maf065fe6e4974f2a9d79f332ab99dfaba635f64c Reported-by: Robert R. Howell <RHowell@uwyo.edu> Tested-by: Robert R. Howell <RHowell@uwyo.edu> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> 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.
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.