Allocate the required memory before calling usb_control_msg. And
the additional memory copy is necessary.
Signed-off-by: NHayes Wang <hayeswang@realtek.com>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>