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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH,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 7C49AC468BD for ; Sat, 8 Jun 2019 11:54:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4C86321537 for ; Sat, 8 Jun 2019 11:54:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559994868; bh=ugI5JX4HZr8+/Im1/glR6HassMJ2Y0b18i4KJ2cZyTU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jO5dSyxcoDeTUIv28pv2lCBbRQpZD3BwwJXje5Jr2oQ94rLw2JZbqNobJ/1VDdqKf JYJGslwCfCnh6kZ1m+lEMTUniko2BHI7YGAmf5j4oX0GaxPWycd3z1Dt7Eltc/lzlU TVku0xXgSh8nqW+xOeActDRKpd3MEF7uxmL+/UNo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728777AbfFHLyP (ORCPT ); Sat, 8 Jun 2019 07:54:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:57808 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727621AbfFHLkc (ORCPT ); Sat, 8 Jun 2019 07:40:32 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4E2CB214AF; Sat, 8 Jun 2019 11:40:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559994032; bh=ugI5JX4HZr8+/Im1/glR6HassMJ2Y0b18i4KJ2cZyTU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jWAeCMSYQtxdI/vrj8OXYi8Kp5EBaaRwbMFMFjZY/V+ebjKJEh+hoZv1rymGaj2CN fF4vP1bovp0uVv6vZfgju3JrWXKGmhRgKxkwNYM9qZhfH7YkkmDbfCD4bCs0zr5k11 7WzGlDXOaPSdWdjB1dfufUhbtjwgaZum5V2MMek4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Biao Huang , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.1 26/70] net: stmmac: update rx tail pointer register to fix rx dma hang issue. Date: Sat, 8 Jun 2019 07:39:05 -0400 Message-Id: <20190608113950.8033-26-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190608113950.8033-1-sashal@kernel.org> References: <20190608113950.8033-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Biao Huang [ 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 3c409862c52e..8cebc44108b2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3338,6 +3338,7 @@ 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