Alex --
Alex Sanks wrote:
So, I've got a patch that:
- Updates reset logic to ensure that endpoint toggle and halt bits only get
cleared on endpoints other than ep0 to fix an extremely unlikely (but
possible) exposure should a setup packet come in after we've checked the
reset status but before calling ep_reset().
- Removes SUSPEND_IMMEDIATELY references and instead uses
SUSPEND_REQUEST_INTERRUPT to suspend the NET2280.
Great! Thanks! Unfortunately I won't be able to test this until the end of next week--I will be away from my test system with the EVB board until the end of next week. I will test it when I get back and let you know how it works for me.
To answer your earlier question--if it is still relevant at all:
Do you have anything I can do to repeat this here? I'll poke and prod it from here and see if I can make it fail, but if you've got any suggestions to increase my chances it'll help. Also, what exactly do you see happening when it doesn't work? Does your host see a device connect (DP pullup event)? Are you enumerating and bulk transfers don't work?
My test was: plug in the EVB board to one host, load net2280 and g_serial on the device side, the device was enumerated, send some data (or not) over bulk endpoints, then unload g_serial (or not), and unplug. Then plug in the EVB board to another host and repeating the test.
Sometimes I could unplug/replug once or twice without the board hanging, but eventually it would hang. I would guess the probability that it would hang on unplug/replug was about 50%.
On the Linux host I saw these error messages after the board hung
Aug 16 22:54:09 galois kernel: hub.c: new USB device 00:11.2-1, assigned address 3 Aug 16 22:54:09 galois kernel: usb-uhci.c: interrupt, status 2, frame# 1788 Aug 16 22:54:09 galois kernel: usb.c: USB device not accepting new address=3 (error=-110) Aug 16 22:54:09 galois kernel: hub.c: new USB device 00:11.2-1, assigned address 4 Aug 16 22:54:09 galois kernel: usb.c: USB device not accepting new address=4 (error=-110)
-- Al
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