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| Filename | Latest commit message | Latest commit date |
|---|---|---|
de87451827
commit 92597f97a40bf661bebceb92e26ff87c76d562d4 upstream.
If a Root Port on Elo i2 is put into D3cold and then back into D0, the
downstream device becomes permanently inaccessible, so add a bridge D3 DMI
quirk for that system.
This was exposed by 14858dcc3b35 ("PCI: Use pci_update_current_state() in
pci_enable_device_flags()"), but before that commit the Root Port in
question had never been put into D3cold for real due to a mismatch between
its power state retrieved from the PCI_PM_CTRL register (which was
accessible even though the platform firmware indicated that the port was in
D3cold) and the state of an ACPI power resource involved in its power
management.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215715
Link: https://lore.kernel.org/r/11980172.O9o76ZdvQC@kreacher
Reported-by: Stefan Gottwald <gottwald@igel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org # v5.15+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| README | ||
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.