usbreset -- send a USB port reset to a USB device
http://marc.info/?l=linux-usb-users&m=116827193506484&w=2
and needs mounted usbfs filesystem
sudo mount -t usbfs none /proc/bus/usb
There is a way to suspend a USB device. In order to use it,
you must have a kernel with CONFIG_PM_SYSFS_DEPRECATED turned on. To
suspend a device, do (as root):
echo -n 2 >/sys/bus/usb/devices/.../power/state
where the "..." is the ID for your device. To unsuspend, do the same
thing but with a "0" instead of the "2" above.
Note that this mechanism is slated to be removed from the kernel within
the next year. Hopefully some other mechanism will take its place.
> To reset a
> device?
Here's a program to do it. You invoke it as either
usbreset /proc/bus/usb/BBB/DDD
or
usbreset /dev/usbB.D
depending on how your system is set up, where BBB and DDD are the bus and
device address numbers.
Alan Stern
