net/mlx5e: Suppress Send WQEBB room warning for PAGE_SIZE >= 16KB

Send WQEBB size is 64 bytes and the max number of WQEBBs for an SQ is 255.
For 16KB pages and greater, there is always sufficient spaces for all
WQEBBs of an SQ. Cast mlx5e_get_max_sq_wqebbs(mdev) to u16. Prevents
-Wtautological-constant-out-of-range-compare warnings from occurring when
PAGE_SIZE >= 16KB.

Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
index 853f312cd757257a84f297ce1ef1a91dc5c7d4c8..5578f92f7e0f6fece0d1ba21dac28ff5f7d31e60 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
@@ -445,7 +445,7 @@ mlx5e_set_eseg_swp(struct sk_buff *skb, struct mlx5_wqe_eth_seg *eseg,
 
 static inline u16 mlx5e_stop_room_for_wqe(struct mlx5_core_dev *mdev, u16 wqe_size)
 {
-       WARN_ON_ONCE(PAGE_SIZE / MLX5_SEND_WQE_BB < mlx5e_get_max_sq_wqebbs(mdev));
+       WARN_ON_ONCE(PAGE_SIZE / MLX5_SEND_WQE_BB < (u16)mlx5e_get_max_sq_wqebbs(mdev));
 
        /* A WQE must not cross the page boundary, hence two conditions:
         * 1. Its size must not exceed the page size.