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    x86: Move pci init function to x86_init · b72d0db9
    Thomas Gleixner 提交于
    The PCI initialization in pci_subsys_init() is a mess. pci_numaq_init,
    pci_acpi_init, pci_visws_init and pci_legacy_init are called and each
    implementation checks and eventually modifies the global variable
    pcibios_scanned.
    
    x86_init functions allow us to do this more elegant. The pci.init
    function pointer is preset to pci_legacy_init. numaq, acpi and visws
    can modify the pointer in their early setup functions. The functions
    return 0 when they did the full initialization including bus scan. A
    non zero return value indicates that pci_legacy_init needs to be
    called either because the selected function failed or wants the
    generic bus scan in pci_legacy_init to happen (e.g. visws).
    Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
    LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80CFE@orsmsx508.amr.corp.intel.com>
    Acked-by: NJesse Barnes <jbarnes@virtuousgeek.org>
    Signed-off-by: NJacob Pan <jacob.jun.pan@intel.com>
    Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
    b72d0db9
pci.h 4.2 KB