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Calling pci_resume_bus() on the secondary bus from pci_power_up() as it is done now is questionable, because it depends on the mandatory bridge power-up delays that are only covered by the PCI bus type PM callbacks. For this reason, move the subordinate bus resume to those callbacks too and use the observation that if a bridge is being powered-up during resume from system-wide suspend, it may be still desirable to runtime-resume its subordinate bus after completing the system-wide transition (in case the resume of the devices on that bus is skipped during it). Link: https://lore.kernel.org/r/3190097.aeNJFYEL58@kreacher Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.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.