tree a503bf3a2373153d49d4b6fb0d0d3798a237dcb1
parent 3e805ad288c524bb65aad3f1e004402223d3d504
author Weiping Pan <wpan@redhat.com> 1376401616 +0800
committer David S. Miller <davem@davemloft.net> 1376447348 -0700

tun: compare with 0 instead of total_len

Since we set "len = total_len" in the beginning of tun_get_user(),
so we should compare the new len with 0, instead of total_len,
or the if statement always returns false.

Signed-off-by: Weiping Pan <wpan@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>