usb_reset_composite_device — warn interface drivers and perform a USB port reset
int usb_reset_composite_device ( | struct usb_device * | udev, |
struct usb_interface * | iface) ; |
udev
device to reset (not in SUSPENDED or NOTATTACHED state)
iface
interface bound to the driver making the request (optional)
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_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
.