[PATCH net-next 3/3] net/mlx4_en: Use __force to fix a sparse warning in TX datapath

[Tariq Toukan]

In TX data-path, we intentionally do not byte-swap, as documented
in code and in the cited commit log.
This fixes sparse warning:
en_tx.c:720:23: warning: incorrect type in argument 1 (different base types)
en_tx.c:720:23:    expected unsigned int [unsigned] [usertype] <noident>
en_tx.c:720:23:    got restricted __be32 [usertype] doorbell_qpn

Fixes: 492f5add4be8 ("net/mlx4_en: Doorbell is byteswapped in Little Endian 
archs")
Signed-off-by: Tariq Toukan <tar...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx4/en_tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c 
b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
index 8a32a8f7f9c0..2cc82dc07397 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
@@ -718,7 +718,7 @@ void mlx4_en_xmit_doorbell(struct mlx4_en_tx_ring *ring)
 #else
        iowrite32be(
 #endif
-                 ring->doorbell_qpn,
+                 (__force u32)ring->doorbell_qpn,
                  ring->bf.uar->map + MLX4_SEND_DOORBELL);
 }
 
-- 
1.8.3.1