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    SubjectRe: [RFC 4/4] firewire: add mem1394
    I wrote:
    (ohci1394's programming of physical DMA filters)
    > The else clause is BTW bogus [...], but this is only
    > important if an IEEE 1394.1 bus bridge was present.

    I had a closer look. Physical DMA _is_ reliably disabled for all nodes
    (including nodes on bridged buses) if ohci1394 was loaded with phys_dma=0.
    Stefan Richter
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