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RULEID:(2390118)(7020095)(201702061078)(5061506573)(5061507331)(1603103135)(2017031320274)(201702181274)(2017031323274)(2017031324274)(2017031322404)(1601125500)(1603101475)(1701031045); SRVR:SG2APC01HT175; x-ms-traffictypediagnostic: SG2APC01HT175: x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(4566010)(82015058); SRVR:SG2APC01HT175; BCL:0; PCL:0; RULEID:; SRVR:SG2APC01HT175; x-microsoft-antispam-message-info: vL32sL6vy3kpbvCyvCGRS6fZ/btU8adirytLfGKrI+px+pIgVBLbgoeHFHBrAreP MIME-Version: 1.0 X-OriginatorOrg: hotmail.com X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 9a4e3081-9524-43cf-bfc3-dcaef82d5da1 X-MS-Exchange-CrossTenant-Network-Message-Id: f01e48c2-6f3a-48e5-76f5-08d68e399140 X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 9a4e3081-9524-43cf-bfc3-dcaef82d5da1 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Feb 2019 02:51:58.1471 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-Transport-CrossTenantHeadersStamped: SG2APC01HT175 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190208_185211_505766_0A500FF2 X-CRM114-Status: GOOD ( 10.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Wen Yang , "linux-kernel@vger.kernel.org" , "linux-media@lists.freedesktop.org" , "linux-amlogic@lists.infradead.org" , "linux-arm-kernel@lists.infradead.org" , "linux-media@vger.kernel.org" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_parse_phandle() returns a node pointer with refcount incremented thus it must be explicitly decremented here after the last usage. The of_find_device_by_node() takes a reference to the underlying device structure, we also should release that reference. This patch fixes those two issues. Fixes: 7ec2c0f72cb1 ("media: platform: Add Amlogic Meson AO CEC Controller driver") Signed-off-by: Wen Yang Acked-by: Neil Armstrong --- drivers/media/platform/meson/ao-cec.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/meson/ao-cec.c b/drivers/media/platform/meson/ao-cec.c index cd4be38..8ba8b46 100644 --- a/drivers/media/platform/meson/ao-cec.c +++ b/drivers/media/platform/meson/ao-cec.c @@ -613,18 +613,25 @@ static int meson_ao_cec_probe(struct platform_device *pdev) } hdmi_dev = of_find_device_by_node(np); - if (hdmi_dev == NULL) + if (hdmi_dev == NULL) { + of_node_put(np); return -EPROBE_DEFER; + } + of_node_put(np); ao_cec = devm_kzalloc(&pdev->dev, sizeof(*ao_cec), GFP_KERNEL); - if (!ao_cec) + if (!ao_cec) { + put_device(&hdmi_dev->dev); return -ENOMEM; + } spin_lock_init(&ao_cec->cec_reg_lock); ao_cec->notify = cec_notifier_get(&hdmi_dev->dev); - if (!ao_cec->notify) + if (!ao_cec->notify) { + put_device(&hdmi_dev->dev); return -ENOMEM; + } ao_cec->adap = cec_allocate_adapter(&meson_ao_cec_ops, ao_cec, "meson_ao_cec", From patchwork Sat Feb 9 02:54:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10804051 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 487C413A4 for ; Sat, 9 Feb 2019 02:54:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 28ECD2D95E for ; Sat, 9 Feb 2019 02:54:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 013852D94C; Sat, 9 Feb 2019 02:54:28 +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=-4.3 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FORGED_HOTMAIL_RCVD2,FREEMAIL_FROM,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 647CF2D94C for ; 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RULEID:(2390118)(7020095)(201702061078)(5061506573)(5061507331)(1603103135)(2017031320274)(201702181274)(2017031323274)(2017031324274)(2017031322404)(1601125500)(1603101475)(1701031045); SRVR:SG2APC01HT083; x-ms-traffictypediagnostic: SG2APC01HT083: x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(4566010)(82015058); SRVR:SG2APC01HT083; BCL:0; PCL:0; RULEID:; SRVR:SG2APC01HT083; x-microsoft-antispam-message-info: mCeZssTfOBPVU85Auf7cOyVrbDWsA5BKbkiLdDATPDlmLH3eaNmOGTXNypab2PNq MIME-Version: 1.0 X-OriginatorOrg: hotmail.com X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 9a4e3081-9524-43cf-bfc3-dcaef82d5da1 X-MS-Exchange-CrossTenant-Network-Message-Id: 4bd38a63-95df-45cf-d151-08d68e39e2af X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 9a4e3081-9524-43cf-bfc3-dcaef82d5da1 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Feb 2019 02:54:18.1933 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-Transport-CrossTenantHeadersStamped: SG2APC01HT083 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190208_185424_377894_F6C75477 X-CRM114-Status: GOOD ( 13.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Wen Yang , "linux-samsung-soc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-media@vger.kernel.org" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_parse_phandle() returns a node pointer with refcount incremented thus it must be explicitly decremented here after the last usage. The of_find_device_by_node() takes a reference to the underlying device structure, we also should release that reference. This patch fixes those two issues. Fixes: a93d429b51fb ("[media] s5p-cec: add cec-notifier support, move out of staging") Signed-off-by: Wen Yang --- drivers/media/platform/s5p-cec/s5p_cec.c | 38 ++++++++++++++++++++++++-------- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/drivers/media/platform/s5p-cec/s5p_cec.c b/drivers/media/platform/s5p-cec/s5p_cec.c index 8837e26..4af47ce 100644 --- a/drivers/media/platform/s5p-cec/s5p_cec.c +++ b/drivers/media/platform/s5p-cec/s5p_cec.c @@ -192,47 +192,64 @@ static int s5p_cec_probe(struct platform_device *pdev) return -ENODEV; } hdmi_dev = of_find_device_by_node(np); - if (hdmi_dev == NULL) + if (hdmi_dev == NULL) { + of_node_put(np); return -EPROBE_DEFER; + } + of_node_put(np); cec = devm_kzalloc(&pdev->dev, sizeof(*cec), GFP_KERNEL); - if (!cec) + if (!cec) { + put_device(&hdmi_dev->dev); return -ENOMEM; + } cec->dev = dev; cec->irq = platform_get_irq(pdev, 0); - if (cec->irq < 0) + if (cec->irq < 0) { + put_device(&hdmi_dev->dev); return cec->irq; + } ret = devm_request_threaded_irq(dev, cec->irq, s5p_cec_irq_handler, s5p_cec_irq_handler_thread, 0, pdev->name, cec); - if (ret) + if (ret) { + put_device(&hdmi_dev->dev); return ret; + } cec->clk = devm_clk_get(dev, "hdmicec"); - if (IS_ERR(cec->clk)) + if (IS_ERR(cec->clk)) { + put_device(&hdmi_dev->dev); return PTR_ERR(cec->clk); + } cec->pmu = syscon_regmap_lookup_by_phandle(dev->of_node, "samsung,syscon-phandle"); - if (IS_ERR(cec->pmu)) + if (IS_ERR(cec->pmu)) { + put_device(&hdmi_dev->dev); return -EPROBE_DEFER; + } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); cec->reg = devm_ioremap_resource(dev, res); - if (IS_ERR(cec->reg)) + if (IS_ERR(cec->reg)) { + put_device(&hdmi_dev->dev); return PTR_ERR(cec->reg); + } cec->notifier = cec_notifier_get(&hdmi_dev->dev); - if (cec->notifier == NULL) + if (cec->notifier == NULL) { + put_device(&hdmi_dev->dev); return -ENOMEM; + } cec->adap = cec_allocate_adapter(&s5p_cec_adap_ops, cec, CEC_NAME, CEC_CAP_DEFAULTS | (needs_hpd ? CEC_CAP_NEEDS_HPD : 0), 1); ret = PTR_ERR_OR_ZERO(cec->adap); if (ret) - return ret; + goto err_put_notifier; ret = cec_register_adapter(cec->adap, &pdev->dev); if (ret) @@ -248,6 +265,9 @@ static int s5p_cec_probe(struct platform_device *pdev) err_delete_adapter: cec_delete_adapter(cec->adap); +err_put_notifier: + cec_notifier_put(cec->notifier); + dev_err(&pdev->dev, "CEC controller registration failed\n"); return ret; }