usb_reset_device — warn interface drivers and perform a USB port reset
int usb_reset_device ( | struct usb_device * udev); |
Warns all drivers bound to registered interfaces (using their pre_reset method), performs the port reset, and then lets the drivers know that the reset is over (using their post_reset method).
Return value is the same as for usb_reset_and_verify_device.
The caller must own the device lock. For example, it's safe to use
this from a driver probe routine after downloading new firmware.
For calls that might not occur during probe, drivers should lock
the device using usb_lock_device_for_reset.
If an interface is currently being probed or disconnected, we assume its driver knows how to handle resets. For all other interfaces, if the driver doesn't have pre_reset and post_reset methods then we attempt to unbind it and rebind afterward.