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Per PCIe r4.0, sec 6.1.6, Root Complex Event Collectors can generate PME interrupts on behalf of Root Complex Integrated Endpoints. Linux does not currently enable PME interrupts from RC Event Collectors, butfe31e69740("PCI/PCIe: Clear Root PME Status bits early during system resume") suggests PME interrupts may be enabled by the platform for ACPI- based runtime wakeup. Clear the PCIe PME Status bit for Root Complex Event Collectors during resume, just like we already do for Root Ports. If the BIOS enables PME interrupts for an event collector and neglects to clear the status bit on resume, this change should fix the same bug asfe31e69740(PMEs not working after waking from a sleep state), but for Root Complex Integrated Endpoints. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.