On Nov 15, 2007 5:46 PM, Arnon Gilboa <[EMAIL PROTECTED]> wrote: > I believe you can do it similar to the way I did for isochronous > transfers in usb-linux.c. > Remember that using SUBMITURB and REAPURBNDELAY ioctls, you need to add > another signal and signal handler for the async bulk, and there might be > some issues in the ohci/uhci because they currently assume only > isochronous transfers are async. A minute ago I tried to implement the > bulk transfers using SUBMITURB and REAPURB (which blocks until response) > but it seems to hang qemu upon connecting a disk-on-key. >
What about interrupt packets? For a bluetooth device, the interrupt packets are sent almost every 2-3 ms. taking up most of the bandwidth. These in turn called the synchronous ioctls hanging qemu for that time. Making these asynchronous gives a timeout in the kernel's usb subsystem.
