From patchwork Mon Feb 8 14:03:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 12075571 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=-14.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 3360FC433E6 for ; Mon, 8 Feb 2021 14:07:36 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C46D364E2E for ; Mon, 8 Feb 2021 14:07:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C46D364E2E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baikalelectronics.ru Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-ID:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=UAyKpaMw1dChkchiB0j4pC6pFOO3AXeWoTcCORiq6vc=; b=XsZrONkMcJesIMTanLIEyRqh6 rn4RTinLDqXFABV4CajcqF5QHsm/oNGn8QpNB6GMRVdskgjtlKYwqTOSO7m2C6yNTmHMvbCLsv2+H OENS2pGS4Y7irJOL4koADeiKgCwA/Idno61dyjMGyn/kgjluVeHyOP7WFBcKxcIIPk7Fa5fjEStS7 Otoq+jGeFlGmpL6Fd8XZeVZVX0llqQbbj1ifAFLxx9VNpxl7Fmr6/a288nm90GDOGmaJgKHBz+VbJ sIJA/NIgUA12wSoEaMDG4Qx9Gnj4lkSdP1wuKjTrBoiGOt1bD3UztOpS3IxfMBRgQ0IhZGYWaeieg T5GnS8YTA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l97A8-0003dt-2e; Mon, 08 Feb 2021 14:05:12 +0000 Received: from mail.baikalelectronics.com ([87.245.175.226] helo=mail.baikalelectronics.ru) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l978r-00036X-Dn for linux-arm-kernel@lists.infradead.org; Mon, 08 Feb 2021 14:03:58 +0000 From: Serge Semin To: Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S. Miller" , Jakub Kicinski , Joao Pinto , Jose Abreu , Maxime Coquelin Subject: [PATCH 11/20] net: stmmac: Discard index usage in the dirty_rx init Date: Mon, 8 Feb 2021 17:03:32 +0300 Message-ID: <20210208140341.9271-12-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20210208140341.9271-1-Sergey.Semin@baikalelectronics.ru> References: <20210208140341.9271-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210208_090353_707189_E22178FF X-CRM114-Status: GOOD ( 10.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrew Lunn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Russell King , Serge Semin , Alexey Malahov , Serge Semin , Vyacheslav Mitrofanov , Pavel Parkhomenko , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Heiner Kallweit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Indeed in accordance with the initialization loop logics the statement "(i - priv->dma_rx_size)" will always equal to zero. Just initialize the dirty_rx pointer with zero then. Signed-off-by: Serge Semin --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 8599ef6df52f..abe8db9965f4 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1412,7 +1412,7 @@ static int init_dma_rx_desc_rings(struct net_device *dev, gfp_t flags) } rx_q->cur_rx = 0; - rx_q->dirty_rx = (unsigned int)(i - priv->dma_rx_size); + rx_q->dirty_rx = 0; /* Setup the chained descriptor addresses */ if (priv->mode == STMMAC_CHAIN_MODE) {