From patchwork Mon Jan 22 11:33:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryder Lee X-Patchwork-Id: 10178297 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 81C4C602B7 for ; Mon, 22 Jan 2018 11:33:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 68A3B27DCD for ; Mon, 22 Jan 2018 11:33:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5997027F4B; Mon, 22 Jan 2018 11:33:30 +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=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7016127DCD for ; Mon, 22 Jan 2018 11:33:28 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 43413266E6D; Mon, 22 Jan 2018 12:33:27 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id B3A45266F50; Mon, 22 Jan 2018 12:33:25 +0100 (CET) Received: from mailgw01.mediatek.com (unknown [210.61.82.183]) by alsa0.perex.cz (Postfix) with ESMTP id D73A2266DEC for ; Mon, 22 Jan 2018 12:33:19 +0100 (CET) X-UUID: be728da7f0c94e98b6b93474149136c9-20180122 Received: from mtkcas08.mediatek.inc [(172.21.101.126)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 361564029; Mon, 22 Jan 2018 19:33:14 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Mon, 22 Jan 2018 19:33:07 +0800 Received: from mtkslt306.mediatek.inc (10.21.14.136) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Mon, 22 Jan 2018 19:33:07 +0800 From: Ryder Lee To: Mark Brown Date: Mon, 22 Jan 2018 19:33:05 +0800 Message-ID: <2fd34b71f3c940186b99f799c3ed14a83ccc4bba.1516620578.git.ryder.lee@mediatek.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-MTK: N Cc: alsa-devel@alsa-project.org, Ryder Lee , linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [alsa-devel] [PATCH] ASoC: mediatek: fix double free in mt2701_afe_pcm_dev_probe() X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP The commit dfa3cbb8(ASoC: mediatek: modify MT2701 AFE driver to adapt mfd device) leads to the following static checker warning: sound/soc/mediatek/mt2701/mt2701-afe-pcm.c:1535 mt2701_afe_pcm_dev_probe() error: double free of 'component' This patch fixes that and adds a helper mt2701_afe_add_component() to setup component. Reported-by: Dan Carpenter Signed-off-by: Ryder Lee --- sound/soc/mediatek/mt2701/mt2701-afe-pcm.c | 32 +++++++++++++++++------------- 1 file changed, 18 insertions(+), 14 deletions(-) diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c index f0cd08f..ff15537 100644 --- a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c +++ b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c @@ -1405,9 +1405,24 @@ static int mt2701_afe_runtime_resume(struct device *dev) return mt2701_afe_enable_clock(afe); } -static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) +static int mt2701_afe_add_component(struct mtk_base_afe *afe) { struct snd_soc_component *component; + + component = kzalloc(sizeof(*component), GFP_KERNEL); + if (!component) + return -ENOMEM; + + component->regmap = afe->regmap; + + return snd_soc_add_component(afe->dev, component, + &mt2701_afe_pcm_dai_component, + mt2701_afe_pcm_dais, + ARRAY_SIZE(mt2701_afe_pcm_dais)); +} + +static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) +{ struct mtk_base_afe *afe; struct mt2701_afe_private *afe_priv; struct device *dev; @@ -1477,12 +1492,6 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) = &mt2701_i2s_data[i][I2S_IN]; } - component = kzalloc(sizeof(*component), GFP_KERNEL); - if (!component) - return -ENOMEM; - - component->regmap = afe->regmap; - afe->mtk_afe_hardware = &mt2701_afe_hardware; afe->memif_fs = mt2701_memif_fs; afe->irq_fs = mt2701_irq_fs; @@ -1495,7 +1504,7 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) ret = mt2701_init_clock(afe); if (ret) { dev_err(dev, "init clock error\n"); - goto err_init_clock; + return ret; } platform_set_drvdata(pdev, afe); @@ -1514,10 +1523,7 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) goto err_platform; } - ret = snd_soc_add_component(dev, component, - &mt2701_afe_pcm_dai_component, - mt2701_afe_pcm_dais, - ARRAY_SIZE(mt2701_afe_pcm_dais)); + ret = mt2701_afe_add_component(afe); if (ret) { dev_warn(dev, "err_dai_component\n"); goto err_dai_component; @@ -1531,8 +1537,6 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) pm_runtime_put_sync(dev); err_pm_disable: pm_runtime_disable(dev); -err_init_clock: - kfree(component); return ret; }