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    SubjectRe: [PATCH] pciehp: Handle interrupts that happen during initialization.
    Kenji Kaneshige <> writes:

    > In the current pciehp implementation, minimum resources enough to
    > enable devices under the bridge are assigned when P2P bridge is
    > hot-added. My concern is that enough resources are NOT assigned to
    > the bridge if an additional slot is empty. As a result, hot-add
    > adapter card on the additional slot won't work because of resource
    > shortage.

    It is a good concern. Right now I know I won't need a bus number
    but you are quite right the mmio and iospace may be a problem.

    My preliminary test case doesn't cover that so I will look and
    confirm it is a problem I need to address.

    >> kobject_name is not initialized, and slot_name(p_slot) calls
    >> hoptlug_slot_name which calls pci_slot_name which kobj_name.
    >> It looks like this problem was introduced in commit
    >> e1acb24f059defdaa0264e925f19cc21b0a3e592
    > Thank your for the information. I understood what is happening.
    > This needs to be fixed. But, as I mentioned before, I think
    > software notification mechanism should be initialized before
    > sysfs entries are created. I'll consider alternative fix.

    Reasonable. I haven't had the need nor gotten brave enough to
    support those sysfs entries in my minimal driver.


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      Last update: 2009-02-18 12:23    [W:0.040 / U:32.260 seconds]
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