Some errors in rum driver or usb ?!?!

[Nicolas]

Hi,

Sometimes my computer freezes with this error:

usb2_dev_suspend_peer:1794: Setting device remote wakeup failed!
rum0: device timeout
rum0: could not multi read MAC register: USB_ERR_TIMEOUT
wlan0: link state changed to DOWN
usb2_dev_suspend_peer:1820: Suspending port failed
rum0: device timeout
rum0: could not multi read MAC register: USB_ERR_TIMEOUT
rum0: device timeout
rum0: could not multi read MAC register: USB_ERR_TIMEOUT
rum0: device timeout
rum0: could not multi read MAC register: USB_ERR_TIMEOUT
rum0: device timeout
rum0: could not multi read MAC register: USB_ERR_TIMEOUT
rum0: device timeout
rum0: could not multi read MAC register: USB_ERR_TIMEOUT
rum0: at uhub8, port 2, addr 4 (disconnected)
rum0: device timeout
rum0: could not multi read MAC register: USB_ERR_IOERROR

And after a minute, FreeBSD works correctly.
I need to unplug the device and replug it, to make it working again !

Nicolas.