From patchwork Mon Aug 2 22:14:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Salah Triki X-Patchwork-Id: 490419 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=-12.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 EA4DFC43214 for ; Mon, 2 Aug 2021 22:14:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D46996018A for ; Mon, 2 Aug 2021 22:14:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232759AbhHBWOs (ORCPT ); Mon, 2 Aug 2021 18:14:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52188 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231907AbhHBWOp (ORCPT ); Mon, 2 Aug 2021 18:14:45 -0400 Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B60DC06175F; Mon, 2 Aug 2021 15:14:34 -0700 (PDT) Received: by mail-wm1-x32f.google.com with SMTP id i10-20020a05600c354ab029025a0f317abfso422327wmq.3; Mon, 02 Aug 2021 15:14:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=DehFgworsYY8Z4elnk8GHXrsWT2MFnGFLCsMTbpqwMY=; b=Cs9ZUq9iAzEM/26fGnMSLab0UWRgKRLovKtO5XkgucS2o8tFPcYBFJy6WIdrovg+D7 owKfatd8z3HEVFuWfbYbcbWkBgndpI+ui2NomqrRLE8RzxVkVXnIVE0qi2vIuTxG9UKY pj+IbPl9Kryo+JOCuvZGEdZ7nn4m+p4DJCoYOHT2AnvEhc3onmG25/DZPGzTLgcbgf0a 75twUEuJn0m/2+uKRvCApfTQ0UofN8aDuxX4Mv9w6Iv0e96VS4bkWNFTOPS8NqYJoAZJ U6kHQmXEDebCetZxyApBmXXvJD70wKoWvWgqjJpVijYSJCzbXT9vyoddasmr0A4MjTVB A+dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=DehFgworsYY8Z4elnk8GHXrsWT2MFnGFLCsMTbpqwMY=; b=KL4YF0+4/JBDxU9SjjdSgYXz8HLfrZC6k/MpsobC2WMevwFF8lppHGOTwhmkuubTwk ZzNUegtdC3x5TdIOdV/BItDc994ydcTfAWkTSyy1l50bJHauXdQ2yR0rnp05DGdYMQMD 0yoUdKYC57Big4B1VxQX45yDmsSxu7Px1Z95FzydsbC08IpC0HWMQasIlWHiJTlGqTjv xNqNyF6zDEfVmGUxqCInZGP6R2WTEZ8FD+gFQ/aV4Iuq6M6G/dRT/iqOxHlUiuhKkO/N Kb2mDfp5gwQTAY9qCL/zvMFQ2d/XcGduJDDk2VLP8vOY7Nf/LUBegg+7ZxuXcJe8mYs3 d7JQ== X-Gm-Message-State: AOAM531aZM2JfniWM9e+NZtVS6Mv5F22Fj+WQlaGk9V9n+hrmTX5/Wlf ADRZ6MLptN6MeBmVGLzGf5OCmAoands= X-Google-Smtp-Source: ABdhPJxdqbvX+Xt65IZsQvVoFBhPh/KuCcy5g9a07XxcqhHa5ZcbFB0aPAUoQ3a/zn8JrqPlKLPm3w== X-Received: by 2002:a05:600c:2909:: with SMTP id i9mr1025024wmd.74.1627942472985; Mon, 02 Aug 2021 15:14:32 -0700 (PDT) Received: from pc ([196.235.140.151]) by smtp.gmail.com with ESMTPSA id t23sm600719wmi.32.2021.08.02.15.14.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Aug 2021 15:14:32 -0700 (PDT) Date: Mon, 2 Aug 2021 23:14:29 +0100 From: Salah Triki To: Marcel Holtmann , Johan Hedberg , Luiz Augusto von Dentz , gregkh@linuxfoundation.org Cc: linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] usb: bluetooth: get lock before calling usb_[disable|enable]_autosuspend() Message-ID: <20210802221429.GA1370657@pc> MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Based on the documentation of usb_[disable|enable]_autosuspend(), the caller must hold udev's device lock. Signed-off-by: Salah Triki --- drivers/bluetooth/btusb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index a9855a2dd561..2ceb48164b6d 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -1939,8 +1939,11 @@ static int btusb_setup_csr(struct hci_dev *hdev) device_set_wakeup_capable(&data->udev->dev, false); /* Re-enable autosuspend if this was requested */ - if (enable_autosuspend) + if (enable_autosuspend) { + usb_lock_device(data->udev); usb_enable_autosuspend(data->udev); + usb_unlock_device(data->udev); + } } }