From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jisheng Zhang Subject: [PATCH] net: mvneta: remove useless RX descriptor prefetch Date: Thu, 31 Mar 2016 14:36:30 +0800 Message-ID: <1459406190-2334-1-git-send-email-jszhang@marvell.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , Jisheng Zhang To: , , Return-path: Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:21515 "EHLO mx0a-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752674AbcCaGk3 (ORCPT ); Thu, 31 Mar 2016 02:40:29 -0400 Sender: netdev-owner@vger.kernel.org List-ID: The rx descriptors are allocated using dma_alloc_coherent, so prefetch doesn't really happen at all. Signed-off-by: Jisheng Zhang --- drivers/net/ethernet/marvell/mvneta.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 5880871..6c09a27 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -757,7 +757,6 @@ mvneta_rxq_next_desc_get(struct mvneta_rx_queue *rxq) int rx_desc = rxq->next_desc_to_proc; rxq->next_desc_to_proc = MVNETA_QUEUE_NEXT_DESC(rxq, rx_desc); - prefetch(rxq->descs + rxq->next_desc_to_proc); return rxq->descs + rx_desc; } -- 2.8.0.rc3