From patchwork Thu Mar 21 06:41:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fei Shao X-Patchwork-Id: 13598425 Received: from mail-yw1-f174.google.com (mail-yw1-f174.google.com [209.85.128.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 69BC741E4E for ; Thu, 21 Mar 2024 06:49:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711003791; cv=none; b=am24PFoymA35vsObDQ/u5GisRm0xPTVzUKme7c10mrubTidH3u7rTC46i5VgFjiq4nvwXKnqGHKs/CJHClPh0eJcQ1oCCBFudfTmVMbFKl0eOMViwT2Hu7gB57KFugr23Zlmwp+PEifLLGYNhxUjeD5zJtd+8U0aGoTbJhADa24= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711003791; c=relaxed/simple; bh=IgovOM9KUeWENwA/mJE5Ljvl53JZKmY38SkL4KVY3lQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Lkc2r3Tt3hZdMK9nCdevk/z3gd76qfz5iCLZnz+Fp/9vazNpIzBxEGYwBrvE2acbKMc6ICce+gbLgPdNEUfHnguKSQevLvIsegsG+DBRJfQ3ZxnPTXC5b+IA3XlXA95lGkAL7JkuR7v9IA3pCoVgdenrFlxMmn1tilps1QcJjDQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=itLdPHLs; arc=none smtp.client-ip=209.85.128.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="itLdPHLs" Received: by mail-yw1-f174.google.com with SMTP id 00721157ae682-609f1f97864so6958467b3.0 for ; Wed, 20 Mar 2024 23:49:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1711003789; x=1711608589; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=XtvNQiaw+2/IaxnmzdGoLxqPTPX+iJkSvUz6nFXt6OU=; b=itLdPHLsBisgnP4S6bThB6GjEPn0SIKz4w52YdbgWeHoSF5rQ164J67TVZztHtalS1 P3hpdmGzzsdTBD5lD9NggZUtTAK2mBIFicSjsswi1eTkiq7T0s70GuqKMyHR0RtrZ8qK HzXRhRSpPOwBgfOZ4fd+YpLllbvaBD0HRtcSE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711003789; x=1711608589; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=XtvNQiaw+2/IaxnmzdGoLxqPTPX+iJkSvUz6nFXt6OU=; b=eSTVnVD0O2p4ou8CmM6509p8SYRQ2rRQGttivdK+vI8pzkIE2WbVxO2VlX0l3/W1e/ Yr25f6d9t1MPZvEq2cm64QyHUBlz/GHog/71IQ8gye1uEjbaBmI7eB9vr5EU0SWaDZxk AWjZW2RyJnYwyja0dkker43vZQzVgIA86jBqcxloz52sEpKQXJXlDssDniABKBCPJMue nayssNZEwauZkPcoS1P0nh01PnmyT+1kCpfekr2TAfWz93oDqHcMAy/wNwc8dyR6VNlU Ty4gO7MQvHYdpTZPNlXh74SjgoZnr/CYlGgs6gVCg9LyGBFYDpnksEFLc1Q+wV/qRD4s fNHA== X-Forwarded-Encrypted: i=1; AJvYcCWswBZdamNEXco7rsu+mVbUoO4ySFVukhPXz2K0iVNS1HUG0m6/MqK63EN9tPmvaSUBgrjSLZMaGpS6JPN3nCsh5oMVgPg62yYE X-Gm-Message-State: AOJu0Yx3bTF8sBNIU/4WO69l3zf+Ype7QbL7OaTDSNpTyYBdfJ8QUme2 vc1wqf/pISKF8Q9sxzGp441LpwXRgisFiChfI5n42KcTeNFUu+wPjcieq5618m0A8jnQZAUjEDw = X-Google-Smtp-Source: AGHT+IHWd5hWPmT05m/dMO6abQe1VIjaPIiKOk2TwZu/GsKoXdSkfitV4XwZzfzNFOrPnEs3/o8wrg== X-Received: by 2002:a05:6a20:4907:b0:1a3:4469:5967 with SMTP id ft7-20020a056a20490700b001a344695967mr7091773pzb.57.1711003407287; Wed, 20 Mar 2024 23:43:27 -0700 (PDT) Received: from fshao-p620.tpe.corp.google.com ([2401:fa00:1:10:c1ff:a4cf:ac35:8df6]) by smtp.gmail.com with ESMTPSA id lb3-20020a056a004f0300b006e664031f10sm12874938pfb.51.2024.03.20.23.43.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Mar 2024 23:43:26 -0700 (PDT) From: Fei Shao To: Mark Brown , AngeloGioacchino Del Regno Cc: Fei Shao , Daniel Kurtz , Matthias Brugger , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-spi@vger.kernel.org Subject: [PATCH 0/2] Fixes NULL pointer access in spi-mt65xx.c Date: Thu, 21 Mar 2024 14:41:00 +0800 Message-ID: <20240321064313.1385316-1-fshao@chromium.org> X-Mailer: git-send-email 2.44.0.396.g6e790dbe36-goog Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hi, This series contains two patches for spi-mt65xx.c, both focusing on its interrupt handler mtk_spi_interrupt(). The first patch is to fix a NULL pointer access in the interrupt handler, which is first found on a MT8186 Chromebook device when the system tries to establish host communication with its embedded controller. The second one is a decorative clean-up when I'm working on the first patch, which simply renames a variable to better follow the rest of the code. I put this after the first fix because I think that will make maintainers and users slightly easier to only backport the fix if needed. Looking forward to any feedback, thank you. Regards, Fei Fei Shao (2): spi: spi-mt65xx: Fix NULL pointer access in interrupt handler spi: spi-mt65xx: Rename a variable in interrupt handler drivers/spi/spi-mt65xx.c | 47 ++++++++++++++++++++-------------------- 1 file changed, 23 insertions(+), 24 deletions(-)