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    Subject[RFC 3/4] arm64: Do not call enable PCI resources when specify PCI_PROBE_ONLY
    Date
    From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>

    When specify PCI_PROBE_ONLY, the resource parent does not get assigned.
    Therefore, pci_enable_resources() return error saying that
    "BAR x not claimed".

    Note: This same logic is also used in the arch/arm/kernel/bios32.c

    Cc: Liviu Dudau <Liviu.Dudau@arm.com>
    Cc: Bjorn Helgaas <bhelgaas@google.com>
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
    ---
    arch/arm64/kernel/pci.c | 8 ++++++++
    1 file changed, 8 insertions(+)

    diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
    index ce5836c..7fd4d2b 100644
    --- a/arch/arm64/kernel/pci.c
    +++ b/arch/arm64/kernel/pci.c
    @@ -68,3 +68,11 @@ void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent)
    bus->domain_nr = domain;
    }
    #endif
    +
    +int pcibios_enable_device(struct pci_dev *dev, int mask)
    +{
    + if (pci_has_flag(PCI_PROBE_ONLY))
    + return 0;
    +
    + return pci_enable_resources(dev, mask);
    +}
    --
    1.9.3


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