• Transaction lifetime was originally set to 10 frames. That was an arbitrary
    number I picked without much thinking :).
    I'm changing that to 32 frames because things like interrupt transfers
    and such are scheduled at that rate. It seems like 1/32 is accepted as
    lowest supported rate. OHCI, for example, defines exactly 32 interrupt
    heads.
    
    While testing USB webcam under XP I noticed that interrupt transactions were
    being canceled and then resubmitted on a regular basis, which works but is a
    waste of CPU cycles. This change fixes that.
    All other devices I have are not affected.
    
    Signed-off-by: Max Krasnyansky <maxk@kernel.org>
    Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
    
    
    
    git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5199 c046a42c-6fe2-441c-8c8c-71466251a162
    aliguori authored
     
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