From 5036b7c7b9137bd084f28438396432348f20e0bc Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Tue, 29 Jan 2013 23:33:15 +0000
Subject: [PATCH] sfc: Explicitly prefetch RX hash prefix, not just Ethernet
 heade

Currently we prefetch from the Ethernet header, but we will also read
the hash prefix.  In practice they should be in the same cache line
and this won't hurt, but it is still pointless to add on the hash
prefix size.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/ethernet/sfc/rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
index 23d67d1f136f..8e78a2fe7364 100644
--- a/drivers/net/ethernet/sfc/rx.c
+++ b/drivers/net/ethernet/sfc/rx.c
@@ -458,7 +458,7 @@ void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
 	/* Prefetch nice and early so data will (hopefully) be in cache by
 	 * the time we look at it.
 	 */
-	prefetch(efx_rx_buf_va(rx_buf) + efx->type->rx_buffer_hash_size);
+	prefetch(efx_rx_buf_va(rx_buf));
 
 	/* Pipeline receives so that we give time for packet headers to be
 	 * prefetched into cache.