lkml.org 
[lkml]   [2012]   [Mar]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v2 33/37] x86, PCI: Add pcibios_root_rescan()
    Date
    Need use it to rescan root bus that was not added via acpi probe.

    Signed-off-by: Yinghai Lu <yinghai@kernel.org>
    ---
    arch/x86/include/asm/pci.h | 2 ++
    arch/x86/pci/legacy.c | 25 +++++++++++++++++++++++++
    2 files changed, 27 insertions(+), 0 deletions(-)

    diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
    index bb015c7..332c191 100644
    --- a/arch/x86/include/asm/pci.h
    +++ b/arch/x86/include/asm/pci.h
    @@ -30,6 +30,8 @@ extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
    int node);
    extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);

    +void pcibios_root_rescan(void);
    +
    #ifdef CONFIG_PCI

    #ifdef CONFIG_PCI_DOMAINS
    diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c
    index aab0e41..251f838 100644
    --- a/arch/x86/pci/legacy.c
    +++ b/arch/x86/pci/legacy.c
    @@ -79,3 +79,28 @@ int __init pci_subsys_init(void)
    return 0;
    }
    subsys_initcall(pci_subsys_init);
    +
    +void __ref pcibios_root_rescan(void)
    +{
    + int busn;
    + struct pci_bus *bus;
    +
    + if (pcibios_last_bus <= 0 || pcibios_last_bus > 0xff)
    + return;
    +
    + for (busn = 0; busn <= pcibios_last_bus; busn++) {
    + bus = pci_find_bus(0, busn);
    +
    + if (bus)
    + continue;
    +
    + bus = __pcibios_scan_specific_bus(busn, false);
    +
    + if (!bus)
    + continue;
    +
    + pci_assign_unassigned_bus_resources(bus);
    +
    + pci_bus_add_devices(bus);
    + }
    +}
    --
    1.7.7


    \
     
     \ /
      Last update: 2012-03-10 08:07    [W:0.021 / U:60.260 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site