[Bug 219220] syscalls (ioctls) on USB devices are very slow

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219220

--- Comment #29 from Matthias Apitz <guru at unixarea.de> ---
(In reply to Hans Petter Selasky from comment #28)

when the card *is* connected and seen it says:

# usbconfig list
ugen0.1: <0x8086 XHCI root HUB> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps)
pwr=SAVE (0mA)
ugen1.1: <Intel EHCI root HUB> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps)
pwr=SAVE (0mA)
ugen0.2: <HID Global OMNIKEY 6121 Smart Card Reader> at usbus0, cfg=0 md=HOST
spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.3: <SunplusIT Inc HD WebCam> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps)
pwr=ON (500mA)
ugen0.4: <vendor 0x0489 product 0xe056> at usbus0, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=ON (100mA)

will add the requested information when it is *not* seen next time;

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