[dpdk-dev] [PATCH v2 3/5] net/bnxt: remove duplicate barrier

Gavin Hu gavin.hu at arm.com
Mon Sep 16 13:27:16 CEST 2019

As there is an inclusive rte_io_wmb within the following rte_write32()
API who rings the doorbell, this makes the above rte_wmb unnecessary and
remove it.

Fixes: 1cd45aeb3270 ("net/bnxt: support Stratus VF device")
Cc: stable at dpdk.org

Signed-off-by: Gavin Hu <gavin.hu at arm.com>
Reviewed-by: Steve Capper <steve.capper at arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
Reviewed-by: Phil Yang <phil.yang at arm.com>
 drivers/net/bnxt/bnxt_hwrm.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 9883fb5..1d9fb17 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -115,9 +115,6 @@ static int bnxt_hwrm_send_message(struct bnxt *bp, void *msg,
 		data = (uint32_t *)&short_input;
 		msg_len = sizeof(short_input);
-		/* Sync memory write before updating doorbell */
-		rte_wmb();
 		max_req_len = BNXT_HWRM_SHORT_REQ_LEN;

More information about the dev mailing list