netdev - [PATCH net-next v2 9/9] bnxt_en: Use dma

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Message-Id: <1463295891-15216-10-git-send-email-michael.chan@broadcom.com>
Date:	Sun, 15 May 2016 03:04:51 -0400
From:	Michael Chan <michael.chan@...adcom.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org
Subject: [PATCH net-next v2 9/9] bnxt_en: Use dma_rmb() instead of rmb().

Use the weaker but more appropriate dma_rmb() to order the reading of
the completion ring.

Suggested-by: Ajit Khaparde <ajit.khaparde@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index f2ac7da..643c3ec 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1433,7 +1433,7 @@ static int bnxt_poll_work(struct bnxt *bp, struct bnxt_napi *bnapi, int budget)
 		/* The valid test of the entry must be done first before
 		 * reading any further.
 		 */
-		rmb();
+		dma_rmb();
 		if (TX_CMP_TYPE(txcmp) == CMP_TYPE_TX_L2_CMP) {
 			tx_pkts++;
 			/* return full budget so NAPI will complete. */
-- 
1.8.3.1