Just one, with links:The good news is that I've just completed running the "usbtest" suite on the 2.5.44 UHCI, and it didn't hang for me after evenGoogle found a testusb.c, but no usbtest suite. Can you provide a URL or two?
http://www.linux-usb.org/usbtest/
I'm thinking that should get split up into a couple pages, but
for now it's got all the info you should need. Except maybe to
say that after you successfully hotplug+init one of the test
devices, you can just
# ./testusb -a
to run tests (in parallel!) on everything. (There's a posting
in the archive not that long ago that talks about how to use it,
and shows sample output.)
Note that Martin Diehl has provided some new firmware, and will
have a GPL source distribution matching it, but I've not yet
tried that firmware or put it up on that webpage.
Further support for evolving the testing framework -- even just
reporting results semi-regularly on varied hardware -- would be
a great way to help improve the stability of this part of 2.5!
And performance information too. I noticed that running full
speed bulk traffic through a USB 2.0 hub is about 25% slower
than running it through a full/low speed host controller, at
least for higher volumes, but the latency for short requests
is much reduced (they can complete before the next SOF).
- Dave
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