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The pcie_port_bus_type must be registered before drivers that depend on it can be registered. Those drivers include: pcied_init() # PCIe native hotplug driver aer_service_init() # AER driver dpc_service_init() # DPC driver pcie_pme_service_init() # PME driver Previously we registered pcie_port_bus_type from pcie_portdrv_init(), a device_initcall. The callers of pcie_port_service_register() (above) are also device_initcalls. This is fragile because the device_initcall ordering depends on link order, which is not explicit. Register pcie_port_bus_type from pci_driver_init() along with pci_bus_type. This removes the link order dependency between portdrv and the pciehp, AER, DPC, and PCIe PME drivers. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
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.