From patchwork Thu May 28 10:38:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 11575533 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F4D960D for ; Thu, 28 May 2020 10:38:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5751E208A7 for ; Thu, 28 May 2020 10:38:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="ljCuJkvB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387846AbgE1Kif (ORCPT ); Thu, 28 May 2020 06:38:35 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:14171 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387950AbgE1Kie (ORCPT ); Thu, 28 May 2020 06:38:34 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1590662313; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=W+PLB8yTgdEMHV27WJ3DIjLDjSUejKal5HqUAeoVY74=; b=ljCuJkvBPK7W0C4gqs8xtJ/MDv4LjOjeyOndZFydx6ZEo5o0pbwmOs3A5DzNALki3cgYFr/R rVEfLBGWePCCew8fVlvA14C574n0CV5EY5ar6k9ctpngFV5qahbt4pDfpcCwuZJ6BqrqOxwL pxYwOJrFvzaP8UmXlkUxO80RUKc= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-west-2.postgun.com with SMTP id 5ecf94a737a454afcbe55612 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 28 May 2020 10:38:31 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id A3467C43387; Thu, 28 May 2020 10:38:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from zijuhu-gv.qualcomm.com (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: zijuhu) by smtp.codeaurora.org (Postfix) with ESMTPSA id DAC38C433CA; Thu, 28 May 2020 10:38:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org DAC38C433CA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=zijuhu@codeaurora.org From: Zijun Hu To: marcel@holtmann.org, johan.hedberg@gmail.com Cc: linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-arm-msm@vger.kernel.org, bgodavar@codeaurora.org, c-hbandi@codeaurora.org, hemantg@codeaurora.org, mka@chromium.org, rjliao@codeaurora.org, zijuhu@codeaurora.org Subject: [PATCH v1] bluetooth: hci_qca: Fix suspend/resume functionality failure Date: Thu, 28 May 2020 18:38:22 +0800 Message-Id: <1590662302-10102-1-git-send-email-zijuhu@codeaurora.org> X-Mailer: git-send-email 2.7.4 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org @dev parameter of qca_suspend()/qca_resume() represents serdev_device, but it is mistook for hci_dev and causes succedent unexpected memory access. Fix by taking @dev as serdev_device. Signed-off-by: Zijun Hu --- drivers/bluetooth/hci_qca.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index e4a6823..c159161 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1977,8 +1977,10 @@ static void qca_serdev_remove(struct serdev_device *serdev) static int __maybe_unused qca_suspend(struct device *dev) { - struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); - struct hci_uart *hu = hci_get_drvdata(hdev); + struct serdev_device *serdev = to_serdev_device(dev); + struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); + struct hci_uart *hu = &qcadev->serdev_hu; + struct hci_dev *hdev __maybe_unused = hu->hdev; struct qca_data *qca = hu->priv; unsigned long flags; int ret = 0; @@ -2057,8 +2059,10 @@ static int __maybe_unused qca_suspend(struct device *dev) static int __maybe_unused qca_resume(struct device *dev) { - struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); - struct hci_uart *hu = hci_get_drvdata(hdev); + struct serdev_device *serdev = to_serdev_device(dev); + struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); + struct hci_uart *hu = &qcadev->serdev_hu; + struct hci_dev *hdev __maybe_unused = hu->hdev; struct qca_data *qca = hu->priv; clear_bit(QCA_SUSPENDING, &qca->flags);