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=-8.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 88FC9C43613 for ; Thu, 20 Jun 2019 18:11:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5717C2166E for ; Thu, 20 Jun 2019 18:11:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561054278; bh=4fXlYpDtVwzR2XnaWuS2EBV4dzux4eUOf4rpqXy2GZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=HpRA1yFPQBGoBk/3OBEabj9d29wW0WHlXJUZN2nBwUTIzqsrPYAFHu+PfsnhbU7CX ss8JxdSPjh6Er1EOCW+4b2zdjhSu8rroeVlOmNvJ4PkYIT/Wpm8mpLbMOkM+vA7CR0 PFZzt3LVMNKNo0YKvJsj6jF307wuaCY6Byb/VVM0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728902AbfFTSLQ (ORCPT ); Thu, 20 Jun 2019 14:11:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:38886 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727637AbfFTSLK (ORCPT ); Thu, 20 Jun 2019 14:11:10 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CD8CD2166E; Thu, 20 Jun 2019 18:11:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561054269; bh=4fXlYpDtVwzR2XnaWuS2EBV4dzux4eUOf4rpqXy2GZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B1L1M5ZIYJdvzId26SW6heUWVW7n9G1Bo4ksst75e31R2IWdmmRwGm11AfqcTK4SN 6A/ygaJaSNg9a5RcJVFNSygTidJZbfcQq0DyoC4UIZXQ5N9Z6s06x/xLOzLuVrtF2h /eDaaGh7BMK0FplKZl2WN+ElT2TcNyeAK/KZbu94= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Biao Huang , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 31/61] net: stmmac: update rx tail pointer register to fix rx dma hang issue. Date: Thu, 20 Jun 2019 19:57:26 +0200 Message-Id: <20190620174342.719197932@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190620174336.357373754@linuxfoundation.org> References: <20190620174336.357373754@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ Upstream commit 4523a5611526709ec9b4e2574f1bb7818212651e ] 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 Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- 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 50c00822b2d8..45e64d71a93f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3319,6 +3319,7 @@ 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); } /** -- 2.20.1