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=-11.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 9673FC433B4 for ; Thu, 13 May 2021 19:27:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5CEB5613F1 for ; Thu, 13 May 2021 19:27:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232314AbhEMT2Q (ORCPT ); Thu, 13 May 2021 15:28:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232307AbhEMT2P (ORCPT ); Thu, 13 May 2021 15:28:15 -0400 Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A424C061574 for ; Thu, 13 May 2021 12:27:04 -0700 (PDT) Received: by mail-wm1-x32e.google.com with SMTP id o6-20020a05600c4fc6b029015ec06d5269so397865wmq.0 for ; Thu, 13 May 2021 12:27:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=PqbwR4L945w2uSfsL/kb8dhVuFB8CH0RH4aZW5kJJIk=; b=qheDlMFs9657HZlMSTPtCq60kx8JJ9r33kg5wCbbtaI+SqpJ6ABKQZPil5sA7vFvi1 uKNhcbNdm/w5QlXLie5rnaol59/E5eehkpLGde/QLp+Ap8osnZ57CYSQSl8WY1/AohTz q11NE/A9P7jYwrSfaspW8G2np4r1bOcq1wVoUzdi/f8V3MQUCsc1dZd5ZkGcwII4auvD zaOSKwokGQwTC4MmweTKn8vzWxbRS8xk1HGOG3NYR3id4/qDwvv4ouuR9v0NIKkkRVj6 DjuzfXhlFNU48YeC3dUAbOaxAt+I+iUh/CAhEc2s7cPqTf34k2vyuyRou9sgqy7t0oWg QOVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=PqbwR4L945w2uSfsL/kb8dhVuFB8CH0RH4aZW5kJJIk=; b=c1ZAbSp8oNzUav3PgCsfAupuOBHA54JaWj6ij6Dl2SoiXZJejwFAJEyoC0DFVw5nQZ 185WwtCzosImgHFOmVqgZCFb85MrLwbjvyWcvdp6DjhJLJuqeWzHEGUhJwmAnrrkNBVZ M7A8caQwKDetUlCY3xslfAs1M79sWOu4mhFBJYjqBPNrB/H0pJMJ7Hwfgk6GYAYjWOab 8/e5Fjgw/ARs6Z763NGxIWNrVJMu/e79gc9CwXlnwEmGAfgl41E/CD+AllpheQQsM1RW kS7F7xxA0FH2PWU4CJCc2er7u+YpB2wCIKYouJrI6RuzR+NqitShmGyTmDCFH+2xxp0X gExQ== X-Gm-Message-State: AOAM533YCI4TW5C3tGuxVqbCZfXXuWf7yjXstpJUuz/wWFovBBbvGlQM jDoaF9HstL8GFXS77Axo1lddIQ== X-Google-Smtp-Source: ABdhPJzCQlePs8w6v253FGGV68DYI4RKl5BD7B4i7n53vRV8poZuELeUjHXg5qpISOprpoYFeSUkSg== X-Received: by 2002:a1c:1d55:: with SMTP id d82mr5162172wmd.12.1620934022866; Thu, 13 May 2021 12:27:02 -0700 (PDT) Received: from localhost.localdomain (2a02-8440-6341-d842-3074-96af-9642-0002.rev.sfr.net. [2a02:8440:6341:d842:3074:96af:9642:2]) by smtp.gmail.com with ESMTPSA id h9sm3053621wmb.35.2021.05.13.12.27.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 May 2021 12:27:02 -0700 (PDT) From: Guillaume Ranquet Cc: Sean Wang , Vinod Koul , Matthias Brugger , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/3] fix mediatek UART APDMA desc logic Date: Thu, 13 May 2021 21:26:39 +0200 Message-Id: <20210513192642.29446-1-granquet@baylibre.com> X-Mailer: git-send-email 2.26.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org The logic used in the apdma driver to handle the virt_dma_desc caused panics and various memory corruption. This is an attempt at sanitizing the logic a bit. Sending a v2 as the previous mails were ill formatted and not threaded properly. I'm also removing the last patch from the series as the fix is alread on mainline. Guillaume Ranquet (3): dmaengine: mediatek: free the proper desc in desc_free handler dmaengine: mediatek: do not issue a new desc if one is still current dmaengine: mediatek: use GFP_NOWAIT instead of GFP_ATOMIC in prep_dma drivers/dma/mediatek/mtk-uart-apdma.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) -- 2.26.3