cxgb4: remove cast when saving IPv4 partial checksum

The checksum field in IPv4 header is in __sum16 and ip_fast_csum()
also returns __sum16. So, no need to cast it to u16.

Fixes following sparse warning:
sge.c:1539:47: warning: cast from restricted __sum16
sge.c:1539:44: warning: incorrect type in assignment (different base types)
sge.c:1539:44:    expected restricted __sum16 [usertype] check
sge.c:1539:44:    got unsigned short [usertype]

Fixes: d0a1299c6bf7 ("cxgb4: add support for vxlan segmentation offload")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index 3c8b4b153ec4e4186abc16dc072b6498cea48e71..72ff46b16704ec648959c11a60cc2a456ec53e2b 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -1524,8 +1524,7 @@ static netdev_tx_t cxgb4_eth_xmit(struct sk_buff *skb, struct net_device *dev)
                        if (iph->version == 4) {
                                iph->check = 0;
                                iph->tot_len = 0;
-                               iph->check = (u16)(~ip_fast_csum((u8 *)iph,
-                                                                iph->ihl));
+                               iph->check = ~ip_fast_csum((u8 *)iph, iph->ihl);
                        }
                        if (skb->ip_summed == CHECKSUM_PARTIAL)
                                cntrl = hwcsum(adap->params.chip, skb);