Convert the driver to use ns_to_timespec64() and timespec64_to_ns()
instead of open coding the same logic.
Signed-off-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>