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    SubjectRe: [linux-pm] Bug in PCI core
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    On Fri, 2006-10-13 at 16:26 +0100, Alan Cox wrote:
    > Ar Gwe, 2006-10-13 am 10:29 -0400, ysgrifennodd Alan Stern:
    > > > I'd like to propose that we have the pci config sysfs interface return
    > > > -EIO when it's blocked (e.g. active BIST or D3cold). This accurately
    > > > reflects the state of the device to userspace, reduces complexity, and
    > > > could potentially save some memory per PCI device instance.
    > >
    > > Could you resubmit your old patches and include a corresponding fix for
    > > this access problem?
    >
    > And then you can fix the applications it breaks, like the X server which
    > does actually want to know where all the devices are located in PCI
    > space.
    >

    .. but which could equally well mmap the resource from sysfs ;)


    also the thing this patch does is ONLY when the device is effectively
    off the bus return -EIO.
    One can argue that -EAGAIN is nicer since it's only a temporary
    condition though....


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