From patchwork Fri Nov 18 14:00:29 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amitkumar Karwar X-Patchwork-Id: 9436523 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8DFF160237 for ; Fri, 18 Nov 2016 14:03:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 74717298DA for ; Fri, 18 Nov 2016 14:03:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 68DF1298DC; Fri, 18 Nov 2016 14:03:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CEEC4298DA for ; 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Fri, 18 Nov 2016 06:03:03 -0800 Received: from pe-lt949 (unknown [10.31.130.253]) by maili.marvell.com (Postfix) with ESMTP id 13B013F7040; Fri, 18 Nov 2016 06:03:02 -0800 (PST) Received: from pe-lt949 (piotr-probook.localdomain [127.0.0.1]) by pe-lt949 (8.14.4/8.14.4/Debian-4.1ubuntu1) with ESMTP id uAIE2ipW027895; Fri, 18 Nov 2016 19:32:45 +0530 Received: (from root@localhost) by pe-lt949 (8.14.4/8.14.4/Submit) id uAIE2i7w027894; Fri, 18 Nov 2016 19:32:44 +0530 From: Amitkumar Karwar To: CC: Cathy Luo , Nishant Sarmukadam , , , , Brian Norris , Amitkumar Karwar Subject: [PATCH v4 06/11] mwifiex: resolve suspend() race with async FW init failure Date: Fri, 18 Nov 2016 19:30:29 +0530 Message-ID: <1479477634-27841-6-git-send-email-akarwar@marvell.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1479477634-27841-1-git-send-email-akarwar@marvell.com> References: <1479477634-27841-1-git-send-email-akarwar@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-11-18_08:, , signatures=0 X-Proofpoint-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1611180245 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Brian Norris Signed-off-by: Brian Norris Tested-by: Xinming Hu Signed-off-by: Amitkumar Karwar --- v4: Same as v1, v2, v3 --- drivers/net/wireless/marvell/mwifiex/pcie.c | 12 ++++++++++-- drivers/net/wireless/marvell/mwifiex/sdio.c | 12 ++++++++++-- drivers/net/wireless/marvell/mwifiex/usb.c | 12 ++++++++++-- 3 files changed, 30 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index cecf1a0..6176cb78 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -118,12 +118,20 @@ static int mwifiex_pcie_suspend(struct device *dev) struct pci_dev *pdev = to_pci_dev(dev); card = pci_get_drvdata(pdev); - if (!card || !card->adapter) { - pr_err("Card or adapter structure is not valid\n"); + if (!card) { + dev_err(dev, "card structure is not valid\n"); return 0; } + /* Might still be loading firmware */ + wait_for_completion(&card->fw_done); + adapter = card->adapter; + if (!adapter) { + dev_err(dev, "adapter is not valid\n"); + return 0; + } + mwifiex_enable_wake(adapter); /* Enable the Host Sleep */ diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 2f5b01f..5077d56 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -283,8 +283,8 @@ static int mwifiex_sdio_suspend(struct device *dev) } card = sdio_get_drvdata(func); - if (!card || !card->adapter) { - pr_err("suspend: invalid card or adapter\n"); + if (!card) { + dev_err(dev, "suspend: invalid card\n"); return 0; } } else { @@ -292,7 +292,15 @@ static int mwifiex_sdio_suspend(struct device *dev) return 0; } + /* Might still be loading firmware */ + wait_for_completion(&card->fw_done); + adapter = card->adapter; + if (!adapter) { + dev_err(dev, "adapter is not valid\n"); + return 0; + } + mwifiex_enable_wake(adapter); /* Enable the Host Sleep */ diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c index 45c9430a..64a4020 100644 --- a/drivers/net/wireless/marvell/mwifiex/usb.c +++ b/drivers/net/wireless/marvell/mwifiex/usb.c @@ -503,11 +503,19 @@ static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) struct usb_tx_data_port *port; int i, j; - if (!card || !card->adapter) { - pr_err("%s: card or card->adapter is NULL\n", __func__); + if (!card) { + dev_err(&intf->dev, "%s: card is NULL\n", __func__); return 0; } + + /* Might still be loading firmware */ + wait_for_completion(&card->fw_done); + adapter = card->adapter; + if (!adapter) { + dev_err(&intf->dev, "card is not valid\n"); + return 0; + } if (unlikely(adapter->is_suspended)) mwifiex_dbg(adapter, WARN,