gve: remove memory barrier around seqno

catSully012 · davem330 · commit 5fd07df47a7f · 2021-12-16T10:41:54.000Z
No longer needed after we introduced the barrier in gve_napi_poll.

Signed-off-by: Catherine Sullivan &lt;csully@google.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git 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);
 }

Original file line number	Diff line number	Diff line change
`@@ -639,8 +639,6 @@ bool gve_rx_work_pending(struct gve_rx_ring *rx)`
`639`	`639`	`desc = rx->desc.desc_ring + next_idx;`
`640`	`640`
`641`	`641`	`flags_seq = desc->flags_seq;`
`642`		`- /* Make sure we have synchronized the seq no with the device */`
`643`		`- smp_rmb();`
`644`	`642`
`645`	`643`	`return (GVE_SEQNO(flags_seq) == rx->desc.seqno);`
`646`	`644`	`}`