net/mlx4: fixing sparse warnings when copying mac, address to gid entry

The mac should be written as __be64 the gid. The warning was because
we changed the mac parameter, which is u64, by writing result of cpu_to_be64
into it. Fixing by using new variable of type __be64.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
index 575839dba8a2..98e776261ead 100644
--- a/drivers/net/ethernet/mellanox/mlx4/port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -79,13 +79,14 @@ static int mlx4_uc_steer_add(struct mlx4_dev *dev, u8 port, u64 mac, int *qpn)
 {
         struct mlx4_qp qp;
         u8 gid[16] = {0};
+        __be64 be_mac;
         int err;
 
         qp.qpn = *qpn;
 
         mac &= 0xffffffffffffULL;
-        mac = cpu_to_be64(mac << 16);
-        memcpy(&gid[10], &mac, ETH_ALEN);
+        be_mac = cpu_to_be64(mac << 16);
+        memcpy(&gid[10], &be_mac, ETH_ALEN);
         gid[5] = port;
 
         err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
@@ -100,11 +101,12 @@ static void mlx4_uc_steer_release(struct mlx4_dev *dev, u8 port,
 {
         struct mlx4_qp qp;
         u8 gid[16] = {0};
+        __be64 be_mac;
 
         qp.qpn = qpn;
         mac &= 0xffffffffffffULL;
-        mac = cpu_to_be64(mac << 16);
-        memcpy(&gid[10], &mac, ETH_ALEN);
+        be_mac = cpu_to_be64(mac << 16);
+        memcpy(&gid[10], &be_mac, ETH_ALEN);
         gid[5] = port;
 
         mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);