[PATCH rdma-core 4/8] mlx5: Avoid sparse complaints about !!

Jason Gunthorpe
2017-07-12T21:17:38Z

Sparse says:
warning: dubious: !x & y

Unclear why sparse thinks this is bad, but casting to C99 bool is the
same as !! and much easier to read.

Signed-off-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
---
providers/mlx5/cq.c | 21 +++++++++++----------
1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/providers/mlx5/cq.c b/providers/mlx5/cq.c
index 500116133c1f9e..9a8d958a9ced68 100644
--- a/providers/mlx5/cq.c
+++ b/providers/mlx5/cq.c
@@ -206,11 +206,12 @@ static inline int handle_responder(struct ibv_wc *wc, struct mlx5_cqe64 *cqe,
if (likely(cur_rsc->type == MLX5_RSC_TYPE_QP)) {
wq = &qp->rq;
if (qp->qp_cap_cache & MLX5_RX_CSUM_VALID)
- wc->wc_flags |= (!!(cqe->hds_ip_ext & MLX5_CQE_L4_OK) &
- !!(cqe->hds_ip_ext & MLX5_CQE_L3_OK) &
- (get_cqe_l3_hdr_type(cqe) ==
- MLX5_CQE_L3_HDR_TYPE_IPV4)) <<
- IBV_WC_IP_CSUM_OK_SHIFT;
+ wc->wc_flags |=
+ ((bool)(cqe->hds_ip_ext & MLX5_CQE_L4_OK) &
+ (bool)(cqe->hds_ip_ext & MLX5_CQE_L3_OK) &
+ (get_cqe_l3_hdr_type(cqe) ==
+ MLX5_CQE_L3_HDR_TYPE_IPV4))
+ << IBV_WC_IP_CSUM_OK_SHIFT;
} else {
wq = &(rsc_to_mrwq(cur_rsc)->rq);
}
@@ -1105,11 +1106,11 @@ static inline int mlx5_cq_read_wc_flags(struct ibv_cq_ex *ibcq)
int wc_flags = 0;

if (cq->flags & MLX5_CQ_FLAGS_RX_CSUM_VALID)
- wc_flags = (!!(cq->cqe64->hds_ip_ext & MLX5_CQE_L4_OK) &
- !!(cq->cqe64->hds_ip_ext & MLX5_CQE_L3_OK) &
- (get_cqe_l3_hdr_type(cq->cqe64) ==
- MLX5_CQE_L3_HDR_TYPE_IPV4)) <<
- IBV_WC_IP_CSUM_OK_SHIFT;
+ wc_flags = ((bool)(cq->cqe64->hds_ip_ext & MLX5_CQE_L4_OK) &
+ (bool)(cq->cqe64->hds_ip_ext & MLX5_CQE_L3_OK) &
+ (get_cqe_l3_hdr_type(cq->cqe64) ==
+ MLX5_CQE_L3_HDR_TYPE_IPV4))
+ << IBV_WC_IP_CSUM_OK_SHIFT;

switch (mlx5dv_get_cqe_opcode(cq->cqe64)) {
case MLX5_CQE_RESP_WR_IMM:
--
2.7.4