From patchwork Wed May 13 02:19:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhishek Pandit-Subedi X-Patchwork-Id: 11544529 X-Patchwork-Delegate: marcel@holtmann.org 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 8532681 for ; Wed, 13 May 2020 02:19:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D77F20714 for ; Wed, 13 May 2020 02:19:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="J94rDlgf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728551AbgEMCTh (ORCPT ); Tue, 12 May 2020 22:19:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35834 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728532AbgEMCTf (ORCPT ); Tue, 12 May 2020 22:19:35 -0400 Received: from mail-pg1-x541.google.com (mail-pg1-x541.google.com [IPv6:2607:f8b0:4864:20::541]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F936C061A0E for ; Tue, 12 May 2020 19:19:35 -0700 (PDT) Received: by mail-pg1-x541.google.com with SMTP id r22so5492468pga.12 for ; Tue, 12 May 2020 19:19:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=JyYHudIiC7MnJBODonJVqQ91dxHR5J0pzH8SU9f0bj8=; b=J94rDlgf2ETWeHBGBa6Mzk/RjSmWqelmJGWWTOOLyacPauLkYP16nyLlRaTiog1bnq SVDHh5riQdQBhsvMFtJvhhQi7/3kAT/0Gac5K++SCQ3ecyoiJ53KwvMMiqcyAq9sDbH6 m2pN/ioRUueIVVP8/hoeuL4whI76fKZ5ihu8Q= 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=JyYHudIiC7MnJBODonJVqQ91dxHR5J0pzH8SU9f0bj8=; b=b6tNovKLiWlzjbBUtba0G3JzKgA+GiywZU7vj2hgk8pygwLyysKbKuiBrkanw8EqD0 10TvSudMeXWdWBOOWmxTqaAYB5UQbr67oHx4Hjd+nyGh+niL5OlQpEsd3/Wqo2uRPtqZ HvVdClXVitWa0HfGNmDmvuoTLKhhA0SyHHtRNexDNJIR9IbUAQFGNrG5LlomfdAz9wvb teL/jHfxeG64m/gAhN46sXDJYW19bA51TbAPLuId0HOz/Fhsk5Ekr3CQXDSmgA8b1whO 5Ni2hLerWIjKwANe3fR6cVYyoiLyfT7VARD+sxg5YI4UP9LYSfG50pTVCN6sq1rJAnEU icuQ== X-Gm-Message-State: AGi0PuZ3MsYwQ3T8rtaNG3v17uwX41HStZ1tn+zRlPTS3gVF2MgUVidg xIqStgy8E7uZ+lRZ15ki/qtVhQ== X-Google-Smtp-Source: APiQypJBjsPJieEQPi1eVDayvEQaLzZJy5jHtU+4a/YMAjymTrhR0x3e3m7eU/ylj51tZWl4SyEXQQ== X-Received: by 2002:aa7:810a:: with SMTP id b10mr22621635pfi.22.1589336374733; Tue, 12 May 2020 19:19:34 -0700 (PDT) Received: from apsdesk.mtv.corp.google.com ([2620:15c:202:1:e09a:8d06:a338:aafb]) by smtp.gmail.com with ESMTPSA id w2sm14170600pja.53.2020.05.12.19.19.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 May 2020 19:19:34 -0700 (PDT) From: Abhishek Pandit-Subedi To: marcel@holtmann.org, linux-bluetooth@vger.kernel.org Cc: chromeos-bluetooth-upstreaming@chromium.org, Abhishek Pandit-Subedi , Alain Michaud , "David S. Miller" , Johan Hedberg , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Jakub Kicinski Subject: [PATCH 2/3] Bluetooth: Add hook for driver to prevent wake from suspend Date: Tue, 12 May 2020 19:19:26 -0700 Message-Id: <20200512191838.2.I797e2588abe0319e571fd440ba1a75d786e69c1b@changeid> X-Mailer: git-send-email 2.26.2.645.ge9eca65c58-goog In-Reply-To: <20200513021927.115700-1-abhishekpandit@chromium.org> References: <20200513021927.115700-1-abhishekpandit@chromium.org> MIME-Version: 1.0 Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Let drivers have a hook to disable configuring scanning during suspend. Drivers should use the device_may_wakeup function call to determine whether hci should be configured for wakeup. For example, an implementation for btusb may look like the following: bool btusb_prevent_wake(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); return !device_may_wakeup(&data->udev->dev); } Signed-off-by: Abhishek Pandit-Subedi Reviewed-by: Alain Michaud --- include/net/bluetooth/hci_core.h | 1 + net/bluetooth/hci_core.c | 6 ++++-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 869ee2b30a4c1..5dcf85f186c6c 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -503,6 +503,7 @@ struct hci_dev { int (*set_diag)(struct hci_dev *hdev, bool enable); int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); void (*cmd_timeout)(struct hci_dev *hdev); + bool (*prevent_wake)(struct hci_dev *hdev); }; #define HCI_PHY_HANDLE(handle) (handle & 0xff) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index de1f4e72ec065..dbe2d79f233fb 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3350,8 +3350,10 @@ static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action, */ ret = hci_change_suspend_state(hdev, BT_SUSPEND_DISCONNECT); - /* Only configure whitelist if disconnect succeeded */ - if (!ret) + /* Only configure whitelist if disconnect succeeded and wake + * isn't being prevented. + */ + if (!ret && !(hdev->prevent_wake && hdev->prevent_wake(hdev))) ret = hci_change_suspend_state(hdev, BT_SUSPEND_CONFIGURE_WAKE); } else if (action == PM_POST_SUSPEND) {