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[2620:137:e000::1:20]) by mx.google.com with ESMTP id g12-20020a056402180c00b0051dea5c92b6si9959605edy.357.2023.07.26.05.20.06; Wed, 26 Jul 2023 05:20:31 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20221208 header.b=M7VA46+n; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233580AbjGZK7L (ORCPT + 99 others); Wed, 26 Jul 2023 06:59:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234053AbjGZK7F (ORCPT ); Wed, 26 Jul 2023 06:59:05 -0400 Received: from mail-wr1-x42a.google.com (mail-wr1-x42a.google.com [IPv6:2a00:1450:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45675212D; Wed, 26 Jul 2023 03:59:03 -0700 (PDT) Received: by mail-wr1-x42a.google.com with SMTP id ffacd0b85a97d-31768ce2e81so2077080f8f.1; Wed, 26 Jul 2023 03:59:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1690369142; x=1690973942; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=S+nKQ3sirP3HDfMdOhfcrJ3FXH/RL38AgDUVvGDTOt4=; b=M7VA46+nGi21oCzVEYji66II0o3eN2zeqAMEdq/AfgudqPphOeAi18h8PoAdofQlRY Z2m6jG4PxKMJEEwpB/Ph7yPwFscmkqJcFt5Otm/6VJbjIbjlNGOwYRMoQlufpDLjij2w bMiDsbDh68EccUMmaYp6EUGj5l7Y601KKSI0lpwxogu0NGxoKa3ak1o+cv0RLlOcTRWW 7FXt9ADVN+7OhVsmoRFFbNN1legBOtRaYPQ4baC4WoTJJj9Px2lW26InLosSGmm62F+t 0mps4n6853tZ54r1mrItLEs4hndELqKCxzUL6WWkwGRmtZkevB+pt/e0DuMSk6FXkY6w KXvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690369142; x=1690973942; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=S+nKQ3sirP3HDfMdOhfcrJ3FXH/RL38AgDUVvGDTOt4=; b=HEHeMiB5TdTEsHKEh8DiiRzDC8bEdNO7Uywv/+trh0Jb/0cr9uVjVSQC+Xkzn+4Eyn /fo88Ln36ic4ushJeQKGv/SlR0g1GbYUialeIRqAqXMw6zeaTudpUpPe49lWn1SD1p49 hYlKilkCmcaVNlO+FQp6ceqEveh+n+AZmilZYRwzC4bvBDSfauMPbXBWg5K8oJGfEPQz clHYlTFXTe6Lxxvp9QFxGLZ1Te+IaaO8ca7mtOq5gTZmn6T0SOUQlzXhJgfZMYoG1rZa FWKji7mIwPGkDNjw0NHT1qLgGooW/IAOU5LDklQCVof6PFHyGb0a3jvJEAuZZD7BJzCV OiTQ== X-Gm-Message-State: ABy/qLalXTeMB3QmzA0mzBhBdmPmNdNCfZusC0Mg1mCDek0zdpeVY0MP 2Mi06oyzgMcXiWCbEl6R+rxRgrCxBv5sYEFpzWmGG6wC2gicsQ== X-Received: by 2002:adf:dc8c:0:b0:313:ee73:cc9a with SMTP id r12-20020adfdc8c000000b00313ee73cc9amr1164733wrj.70.1690369141464; Wed, 26 Jul 2023 03:59:01 -0700 (PDT) MIME-Version: 1.0 References: <20230726104827.60382-1-dg573847474@gmail.com> In-Reply-To: <20230726104827.60382-1-dg573847474@gmail.com> From: Chengfeng Ye Date: Wed, 26 Jul 2023 18:58:50 +0800 Message-ID: Subject: Re: [PATCH] dmaengine: plx_dma: Fix potential deadlock on &plxdev->ring_lock To: logang@deltatee.com, vkoul@kernel.org Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fixes: 1d05a0bdb420 ("dmaengine: plx_dma: Move spin_lock_bh() to spin_lock() ")