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This reverts commit08d0cc5f34. Michael reported that when attempting to resume from suspend to RAM on ASUS mini PC PN51-BB757MDE1 (DMI model: MINIPC PN51-E1),08d0cc5f34("PCI/ASPM: Remove pcie_aspm_pm_state_change()") caused a 12-second delay with no output, followed by a reboot. Workarounds include: - Reverting08d0cc5f34("PCI/ASPM: Remove pcie_aspm_pm_state_change()") - Booting with "pcie_aspm=off" - Booting with "pcie_aspm.policy=performance" - "echo 0 | sudo tee /sys/bus/pci/devices/0000:03:00.0/link/l1_aspm" before suspending - Connecting a USB flash drive Link: https://lore.kernel.org/r/20240102232550.1751655-1-helgaas@kernel.org Fixes:08d0cc5f34("PCI/ASPM: Remove pcie_aspm_pm_state_change()") Reported-by: Michael Schaller <michael@5challer.de> Link: https://lore.kernel.org/r/76c61361-b8b4-435f-a9f1-32b716763d62@5challer.de Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: <stable@vger.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.