From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,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 EDD23C04A6B for ; Tue, 14 May 2019 03:37:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B1C25208CA for ; Tue, 14 May 2019 03:37:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726902AbfENDhm (ORCPT ); Mon, 13 May 2019 23:37:42 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:60003 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726677AbfENDhj (ORCPT ); Mon, 13 May 2019 23:37:39 -0400 X-UUID: 3e8f6e16f38e4db2badf82b5f7f493f0-20190514 X-UUID: 3e8f6e16f38e4db2badf82b5f7f493f0-20190514 Received: from mtkmrs01.mediatek.inc [(172.21.131.159)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 990929432; Tue, 14 May 2019 11:37:32 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs01n2.mediatek.inc (172.21.101.79) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 14 May 2019 11:37:29 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 14 May 2019 11:37:29 +0800 From: Biao Huang To: Jose Abreu CC: Giuseppe Cavallaro , Alexandre Torgue , Maxime Coquelin , Matthias Brugger , , , , , , , , , Subject: [v3, PATCH 1/4] net: stmmac: update rx tail pointer register to fix rx dma hang issue. Date: Tue, 14 May 2019 11:37:23 +0800 Message-ID: <1557805046-306-2-git-send-email-biao.huang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1557805046-306-1-git-send-email-biao.huang@mediatek.com> References: <1557805046-306-1-git-send-email-biao.huang@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-TM-SNTS-SMTP: E088786E60850BAFA2F416078B4746A1156CA15658EC3916A3A3E2ED30BAED4A2000:8 X-MTK: N Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently we will not update the receive descriptor tail pointer in stmmac_rx_refill. Rx dma will think no available descriptors and stop once received packets exceed DMA_RX_SIZE, so that the rx only test will fail. Update the receive tail pointer in stmmac_rx_refill to add more descriptors to the rx channel, so packets can be received continually Fixes: 54139cf3bb33 ("net: stmmac: adding multiple buffers for rx") Signed-off-by: Biao Huang --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 97c5e1a..906f2be 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3336,6 +3336,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue) entry = STMMAC_GET_ENTRY(entry, DMA_RX_SIZE); } rx_q->dirty_rx = entry; + stmmac_set_rx_tail_ptr(priv, priv->ioaddr, rx_q->rx_tail_addr, queue); } /** -- 1.7.9.5