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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=no 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 8DF1AC43603 for ; Fri, 6 Dec 2019 19:51:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 6171F24673 for ; Fri, 6 Dec 2019 19:51:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="eN0NMLZ9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6171F24673 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=davemloft.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.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: From:Subject:To:Message-Id:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ILWwm/XQ5yVuP2DpMk9MJeTl+M92CK6wKz8VD4/MzkI=; b=eN0NMLZ9b13Rma rHJkKTWIPEBReozUqe/X2GFfmm+/moikHLD9BKyNECCOxocQ8k9rATpUwCTtJ89Gs290gmYk3tKkl HtYKSJdMCHyoFYzngCV/R9/NxK4TzE6JEgsb+ZXbHm06F5yjAUty0FYBFnpE+jNOwTbTn3OW5IT2E s5QlyH8u8o4vB/0MvmkmKFZQgwWWZUgHvM/73WyYuCJ/HvpwFDRxXjgwvLRMHO89lC7aG/XADMiRJ FjqmLmzaweFwJpXk3t1ZR0QZdhlf9wMs3owlBUEvy6WfRaTCSTIZZThr3hJ0b1gIjRpPVahUzYGLj 2AK+WdhI5LAcAb7SHEZQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1idJd0-0001ND-Fy; Fri, 06 Dec 2019 19:51:02 +0000 Received: from shards.monkeyblade.net ([2620:137:e000::1:9]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1idJcx-0001ME-NP for linux-arm-kernel@lists.infradead.org; Fri, 06 Dec 2019 19:51:00 +0000 Received: from localhost (unknown [IPv6:2601:601:9f00:1c3::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id D9CA01511E7DD; Fri, 6 Dec 2019 11:50:50 -0800 (PST) Date: Fri, 06 Dec 2019 11:50:50 -0800 (PST) Message-Id: <20191206.115050.2225203369041453711.davem@davemloft.net> To: neidhard.kim@lge.com Subject: Re: [PATCH] net: stmmac: reset Tx desc base address before restarting Tx From: David Miller In-Reply-To: <20191206114000.27283-1-neidhard.kim@lge.com> References: <20191206114000.27283-1-neidhard.kim@lge.com> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Fri, 06 Dec 2019 11:50:51 -0800 (PST) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191206_115059_766165_659423FF X-CRM114-Status: UNSURE ( 7.69 ) X-CRM114-Notice: Please train this message. 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: alexandre.torgue@st.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, joabreu@synopsys.com, mcoquelin.stm32@gmail.com, peppe.cavallaro@st.com, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jongsung Kim Date: Fri, 6 Dec 2019 20:40:00 +0900 > Refer to the databook of DesignWare Cores Ethernet MAC Universal: > > 6.2.1.5 Register 4 (Transmit Descriptor List Address Register > > If this register is not changed when the ST bit is set to 0, then > the DMA takes the descriptor address where it was stopped earlier. > > The stmmac_tx_err() does zero indices to Tx descriptors, but does > not reset HW current Tx descriptor address. To fix inconsistency, > the base address of the Tx descriptors should be rewritten before > restarting Tx. > > Signed-off-by: Jongsung Kim Applied. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel