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    SubjectRe: alpha iommu fixes
    Andrea Arcangeli wrote:
    > On Sun, May 20, 2001 at 03:49:58PM +0200, Andrea Arcangeli wrote:
    > > they returned zero. You either have to drop the skb or to try again later
    > > if they returns zero.
    > BTW, pci_map_single is not a nice interface, it cannot return bus
    > address 0,

    who says?

    A value of zero for the mapping is certainly an acceptable value, and it
    should be handled by drivers.

    In fact its an open bug in a couple net drivers that they check the
    mapping to see if it is non-zero...

    Jeff Garzik | "Do you have to make light of everything?!"
    Building 1024 | "I'm extremely serious about nailing your
    MandrakeSoft | step-daughter, but other than that, yes."
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