netdev - [PATCH net-next 4/8] gve: remove memory barrier around seqno

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Message-Id: <20211216004652.1021911-5-jeroendb@google.com>
Date:   Wed, 15 Dec 2021 16:46:48 -0800
From:   Jeroen de Borst <jeroendb@...gle.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org,
        Catherine Sullivan <csully@...gle.com>
Subject: [PATCH net-next 4/8] gve: remove memory barrier around seqno

From: Catherine Sullivan <csully@...gle.com>

No longer needed after we introduced the barrier in gve_napi_poll.

Signed-off-by: Catherine Sullivan <csully@...gle.com>
---
 drivers/net/ethernet/google/gve/gve_rx.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/google/gve/gve_rx.c b/drivers/net/ethernet/google/gve/gve_rx.c
index 3d04b5aff331..9ddcc497f48e 100644
--- a/drivers/net/ethernet/google/gve/gve_rx.c
+++ b/drivers/net/ethernet/google/gve/gve_rx.c
@@ -639,8 +639,6 @@ bool gve_rx_work_pending(struct gve_rx_ring *rx)
 	desc = rx->desc.desc_ring + next_idx;
 
 	flags_seq = desc->flags_seq;
-	/* Make sure we have synchronized the seq no with the device */
-	smp_rmb();
 
 	return (GVE_SEQNO(flags_seq) == rx->desc.seqno);
 }
-- 
2.34.1.173.g76aa8bc2d0-goog