Ezload problems.

[Alexandre Jouravlev]

>
> Try setting hw.usb.uhub.debug=20 befor testing.
> Would be interesting to see why you see a disconnect event,
> but no connect.
>
>
As I am not skilled usb developer (this is my first usb project ever) I 
don't understand much in this output.
Here is the output of debug session from plugging the device to what 
happens next:

ugen0: Device (no firmware), rev 1.00/1.00, addr 2
uhub_intr: sc=0xc288d790
uhub_explore dev=0xc2af4380 addr=1
uhub_explore: uhub0 port 1 status 0x0100 0x0000
uhub_explore: port=1 !C_CONNECT_STATUS
uhub_explore: uhub0 port 2 status 0x0100 0x0003
uhub_explore: C_PORT_ENABLED 0x3
uhub_explore: status change hub=1 port=2
uhub_explore: device addr=2 disappeared on port 2
ugen0: at uhub0 port 2 (addr 2) disconnected
ugen0: detached
uhub_explore: port=2 !CURRENT_CONNECT_STATUS
uhub_intr: sc=0xc288d790
uhub_explore dev=0xc2af4380 addr=1
uhub_explore: uhub0 port 1 status 0x0100 0x0000
uhub_explore: port=1 !C_CONNECT_STATUS
uhub_explore: uhub0 port 2 status 0x0101 0x0001
uhub_explore: status change hub=1 port=2
uhub_intr: sc=0xc288d790
uhub_explore dev=0xc2af4380 addr=1
uhub_explore: uhub0 port 1 status 0x0100 0x0010
uhub_explore: port=1 !C_CONNECT_STATUS
uhub_explore: uhub0 port 2 status 0x0100 0x0011
uhub_explore: status change hub=1 port=2
uhub_explore: port=2 !CURRENT_CONNECT_STATUS
uhub_intr: sc=0xc288d790

And next the following repeated at rate about 2 messages per second:

uhub_intr: sc=0xc288d790
uhub_explore dev=0xc2af4380 addr=1
uhub_explore: uhub0 port 1 status 0x0100 0x0010
uhub_explore: port=1 !C_CONNECT_STATUS
uhub_explore: uhub0 port 2 status 0x0101 0x0011
uhub_explore: status change hub=1 port=2