From patchwork Thu May 28 10:20:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuhong Yuan X-Patchwork-Id: 196975 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=-9.3 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 40797C433E0 for ; Thu, 28 May 2020 10:24:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1DE55208B8 for ; Thu, 28 May 2020 10:24:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FocExwZg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387840AbgE1KVp (ORCPT ); Thu, 28 May 2020 06:21:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59790 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387717AbgE1KUc (ORCPT ); Thu, 28 May 2020 06:20:32 -0400 Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A9D4C05BD1E; Thu, 28 May 2020 03:20:32 -0700 (PDT) Received: by mail-pj1-x1043.google.com with SMTP id nu7so2990778pjb.0; Thu, 28 May 2020 03:20:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=n8iipgJAi/NQyT9g10+jXpAAhQUJmCgX3ykzxFLrLKM=; b=FocExwZgEGs3gT0g8mnUyvPa6RpF30FXKarH1WH9tVM3Qfk2UMDFsUGGktPrgs6eG8 oWa6KQ3j+BOpYt1wNostFfpItGTf7Nia2InQUTO4w8rOcch2k+RjAUsNbvmSK/nxbgDp HOSdd++QHNr67yGxv/1ozdj8+NQjB7FB8qxJMmDpuAv0IP2tidoiPkWbNp4AAileJdUN QdUH88+CtMfwJs0OtDlUNxQ4KSfvGtRsAtsXTTE9PD0sEuaBlzkpIWj9IJNujmvNiVNe Dr9VGxowiAhoIecs4k25fXf/tzGz9WKaUTZ5NiqHo5NEQkJnHkq98nLVkPhtXHFA+mMw +hTQ== 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:mime-version :content-transfer-encoding; bh=n8iipgJAi/NQyT9g10+jXpAAhQUJmCgX3ykzxFLrLKM=; b=YklP6LXx4oECV0SSYmXgiqZbepkwFWyP8xO6sqMNDl87aFiDnqQ93A4+5OBV9Kboxy vguPffM0h5oI1ETxtnEtQDsGzjlGJn4HsWTzHoSNwDl5oMHI8yaS8AiI6FTk2HwX90jI 7kRNOpJUw/PzOH9oriqlJK7s93em9wObm5HF0TJlf8r9JdpamWYgvF7ft4SZImV84zGZ jNPrg/KN5EuVEoVeluQFwoptesN6dlcqZgJtGmisyrSh3MwWkmt4hli79seck2Zr5coh eM7Y5qVEN5xWljone/2hUTIEmq2+BZkiTly3ROqEyyGqiFH4veYnNULMDfTAs1IEOyGr gfEw== X-Gm-Message-State: AOAM531HDHOMXT5yQOujRrIZ8e5sXn80ap6zg6yoLXjIXOrKpSfDKxH+ /wi/JwUhetq2UuRcJRv6zNc= X-Google-Smtp-Source: ABdhPJywCGzsdw5guspTvAxKu+Juxq4ii0vQsLONLmhQYEB+Q72DtYuN3e5AP5ezkwffsfJqoQc9hQ== X-Received: by 2002:a17:90a:1485:: with SMTP id k5mr2995699pja.108.1590661231748; Thu, 28 May 2020 03:20:31 -0700 (PDT) Received: from suzukaze.ipads-lab.se.sjtu.edu.cn ([202.120.40.82]) by smtp.gmail.com with ESMTPSA id e16sm4193122pgg.8.2020.05.28.03.20.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 May 2020 03:20:30 -0700 (PDT) From: Chuhong Yuan Cc: Sean Wang , Marcel Holtmann , Johan Hedberg , Matthias Brugger , linux-bluetooth@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Chuhong Yuan Subject: [PATCH] Bluetooth: btmtkuart: add missed functions in the error paths of btmtuart_probe() Date: Thu, 28 May 2020 18:20:21 +0800 Message-Id: <20200528102021.911709-1-hslester96@gmail.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org btmtuart_probe() misses several function calls in its error paths, including hci_free_dev() and clk_disable_unprepare(). Refactor the code and call correct undo functions to fix the error paths. Signed-off-by: Chuhong Yuan --- drivers/bluetooth/btmtkuart.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/bluetooth/btmtkuart.c b/drivers/bluetooth/btmtkuart.c index e11169ad8247..8a81fbca5c9d 100644 --- a/drivers/bluetooth/btmtkuart.c +++ b/drivers/bluetooth/btmtkuart.c @@ -1015,7 +1015,7 @@ static int btmtkuart_probe(struct serdev_device *serdev) if (btmtkuart_is_standalone(bdev)) { err = clk_prepare_enable(bdev->osc); if (err < 0) - return err; + goto err_hci_free_dev; if (bdev->boot) { gpiod_set_value_cansleep(bdev->boot, 1); @@ -1028,10 +1028,8 @@ static int btmtkuart_probe(struct serdev_device *serdev) /* Power on */ err = regulator_enable(bdev->vcc); - if (err < 0) { - clk_disable_unprepare(bdev->osc); - return err; - } + if (err < 0) + goto err_clk_disable_unprepare; /* Reset if the reset-gpios is available otherwise the board * -level design should be guaranteed. @@ -1063,7 +1061,6 @@ static int btmtkuart_probe(struct serdev_device *serdev) err = hci_register_dev(hdev); if (err < 0) { dev_err(&serdev->dev, "Can't register HCI device\n"); - hci_free_dev(hdev); goto err_regulator_disable; } @@ -1072,6 +1069,11 @@ static int btmtkuart_probe(struct serdev_device *serdev) err_regulator_disable: if (btmtkuart_is_standalone(bdev)) regulator_disable(bdev->vcc); +err_clk_disable_unprepare: + if (btmtkuart_is_standalone(bdev)) + clk_disable_unprepare(bdev->osc); +err_hci_free_dev: + hci_free_dev(hdev); return err; }