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: 379932 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=-13.8 required=3.0 tests=BAYES_00, 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 A6A74C433DB for ; Mon, 8 Feb 2021 14:15:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 737DC64E60 for ; Mon, 8 Feb 2021 14:15:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231567AbhBHOPQ (ORCPT ); Mon, 8 Feb 2021 09:15:16 -0500 Received: from mail.baikalelectronics.com ([87.245.175.226]:57512 "EHLO mail.baikalelectronics.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231426AbhBHOHR (ORCPT ); Mon, 8 Feb 2021 09:07:17 -0500 From: Serge Semin To: Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S. Miller" , Jakub Kicinski , Joao Pinto , Jose Abreu , Maxime Coquelin CC: Serge Semin , Serge Semin , Alexey Malahov , Pavel Parkhomenko , Vyacheslav Mitrofanov , Russell King , Andrew Lunn , Heiner Kallweit , , , , 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) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.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) {