From patchwork Wed Apr 14 15:29:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 421567 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10DE4C433ED for ; Wed, 14 Apr 2021 15:30:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E6A6161168 for ; Wed, 14 Apr 2021 15:30:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352351AbhDNPa0 (ORCPT ); Wed, 14 Apr 2021 11:30:26 -0400 Received: from mx2.suse.de ([195.135.220.15]:33180 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344386AbhDNPaL (ORCPT ); Wed, 14 Apr 2021 11:30:11 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id AED40B01C; Wed, 14 Apr 2021 15:29:48 +0000 (UTC) From: Thomas Bogendoerfer To: "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 net-next 3/9] net: korina: Remove not needed cache flushes Date: Wed, 14 Apr 2021 17:29:39 +0200 Message-Id: <20210414152946.12517-4-tsbogend@alpha.franken.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210414152946.12517-1-tsbogend@alpha.franken.de> References: <20210414152946.12517-1-tsbogend@alpha.franken.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Descriptors are mapped uncached so there is no need to do any cache handling for them. Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/korina.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c index 3a454f6214b0..b6dcbb6d5e05 100644 --- a/drivers/net/ethernet/korina.c +++ b/drivers/net/ethernet/korina.c @@ -230,7 +230,6 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) dma_cache_wback((u32)skb->data, skb->len); /* Setup the transmit descriptor. */ - dma_cache_inv((u32) td, sizeof(*td)); td->ca = CPHYSADDR(skb->data); chain_prev = (lp->tx_chain_tail - 1) & KORINA_TDS_MASK; chain_next = (lp->tx_chain_tail + 1) & KORINA_TDS_MASK; @@ -283,7 +282,6 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev) lp->tx_chain_tail = chain_next; } } - dma_cache_wback((u32) td, sizeof(*td)); netif_trans_update(dev); spin_unlock_irqrestore(&lp->lock, flags); @@ -374,8 +372,6 @@ static int korina_rx(struct net_device *dev, int limit) u32 devcs, pkt_len, dmas; int count; - dma_cache_inv((u32)rd, sizeof(*rd)); - for (count = 0; count < limit; count++) { skb = lp->rx_skb[lp->rx_next_done]; skb_new = NULL; @@ -454,7 +450,6 @@ static int korina_rx(struct net_device *dev, int limit) ~DMA_DESC_COD; lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK; - dma_cache_wback((u32)rd, sizeof(*rd)); rd = &lp->rd_ring[lp->rx_next_done]; writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas); } @@ -469,7 +464,6 @@ static int korina_rx(struct net_device *dev, int limit) rd->devcs = 0; skb = lp->rx_skb[lp->rx_next_done]; rd->ca = CPHYSADDR(skb->data); - dma_cache_wback((u32)rd, sizeof(*rd)); korina_chain_rx(lp, rd); }