Hi,

1.
does anybody have any experience with async usb transfers? When I say 
asynchronous transfers I refer to non-blocking (write/read/ioctl) calls the 
user thread can test or wait for their completion. 

In the write/read/ioctl it is no problem to pass an urb down asynchronously. 
But how do I test/wait for its success? If nobody has a better idea, I would 
do that in ioctl with a special ioctl-code for testing/waiting.

2.
Does the host-controller driver queue urbs? Or do I have to wait for the 
completion of an urb before I can pass the next one down?

Thanx,
Jan


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