tun: compare with 0 instead of total_len
authorWeiping Pan <wpan@redhat.com>
Tue, 13 Aug 2013 13:46:56 +0000 (21:46 +0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 14 Aug 2013 02:29:08 +0000 (19:29 -0700)
commitd9bf5f130946695063469749bfd190087b7fad39
treea503bf3a2373153d49d4b6fb0d0d3798a237dcb1
parent3e805ad288c524bb65aad3f1e004402223d3d504
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>
drivers/net/tun.c