[PATCH net-next] liquidio: using NULL instead of plain integer

[YueHaibing]

Fix following warning:

drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c:1453:35: warning: Using 
plain integer as NULL pointer
drivers/net/ethernet/cavium/liquidio/lio_main.c:2910:23: warning: Using plain 
integer as NULL pointer

Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c | 2 +-
 drivers/net/ethernet/cavium/liquidio/lio_main.c         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c 
b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
index 9f4f3c1d..43d11c3 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
@@ -1450,7 +1450,7 @@ void cn23xx_tell_vf_its_macaddr_changed(struct 
octeon_device *oct, int vfidx,
                mbox_cmd.recv_len = 0;
                mbox_cmd.recv_status = 0;
                mbox_cmd.fn = NULL;
-               mbox_cmd.fn_arg = 0;
+               mbox_cmd.fn_arg = NULL;
                ether_addr_copy(mbox_cmd.msg.s.params, mac);
                mbox_cmd.q_no = vfidx * oct->sriov_info.rings_per_vf;
                octeon_mbox_write(oct, &mbox_cmd);
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c 
b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index e97e675..9b7819f 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -2907,7 +2907,7 @@ static int liquidio_set_vf_spoofchk(struct net_device 
*netdev, int vfidx,
        nctrl.ncmd.s.param2 = enable;
        nctrl.ncmd.s.more = 0;
        nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
-       nctrl.cb_fn = 0;
+       nctrl.cb_fn = NULL;
 
        retval = octnet_send_nic_ctrl_pkt(oct, &nctrl);
 
-- 
2.7.0