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Revision 719c130d

ID719c130dcaa3b1269beed71ca9cf6c43a0219b30

Added by Hans de Goede over 11 years ago

uhci: Fix 1 ms delay in interrupt reporting to the guest

Re-arrange how we process frames / increase frnum / report pending interrupts,
to avoid a 1 ms delay in interrupt reporting to the guest. This increases
the packet throughput for cases where the guest submits a single packet,
then waits for its completion then re-submits from 500 pkts / sec to
1000 pkts / sec. This impacts for example the use of redirected / virtual
usb to serial convertors.

Signed-off-by: Hans de Goede <>
Signed-off-by: Gerd Hoffmann <>

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