From patchwork Sun Oct 20 05:27:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zijun Hu X-Patchwork-Id: 13842984 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D4088D3C934 for ; Sun, 20 Oct 2024 05:28:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XONzYwTEhC8C1UlrhLBrH8dBAcL2eRPQOZdAi6vIsdI=; b=hywnsPbzZUfapV qO7hBakfkYoL+SUCEPwJvuQaWFPOyQidOprPzYilrJaIY9EAUeEgkVbEE20JqjgXPUp887WAKKy7b Zq2zVtKA2eg2lh3zltBe9h134h7JfNzHDPjDvAeGDSSUi/aSoj/Qpcm7f6hunm1hzOUw39ClE0Rce VOAmD0ey0+B8iDWavEmNU0A7A87hdVwOPBvZpmR7iGR1dHPZYAbc9mefgl1RE6QFFk4lHt1zljoBS kEXP1PP/O07ylzKzoxUim0hDJa8ovLTIbmE5gS6NFyHu2INi/xB1Tou03mOs9qs04qiFxMN8SyMyU nSlxhda6dnHwr7JrMZ4A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t2OUl-00000004RqU-1wzI; Sun, 20 Oct 2024 05:28:51 +0000 Received: from pv50p00im-hyfv10021501.me.com ([17.58.6.48]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t2OUi-00000004Rpn-379B for linux-phy@lists.infradead.org; Sun, 20 Oct 2024 05:28:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=1a1hai; t=1729402128; bh=bqgD9TqeRl3fISVSF8RjYIENXrO/0dTFirpvQNfH4Dk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To; b=gpwA6Nebi6sHyPqVwriErkrRAhyENlFTXgZcArARP8mEwzKBlNqcKlFYAJFtkECLL ya6kIrNGTXEdErFwr9yHehnypMbo9TDrumZZVglnayEeMonZDR5aZs/1tiJDj2Fw9+ J3ydjynv9shdosxmzgJvzSjJPXAjWXXdlUQ+szT2HoIjJhJYbHqH6eXd1vvyxofr2f GmoO62berrK2gd/Yg3SXJDmt9x+R3qrzq0AgXDWFse12ZjC6bDj+QnAWaW6//FYFKY gNmBNGcpgnjES50eYR2OZ5vIeOUL4gQ8+J7hbss9dMaXasTJCXA6ivJJwcJs6DTzZa vefo6h7EQZJsg== Received: from [192.168.1.26] (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-hyfv10021501.me.com (Postfix) with ESMTPSA id 7D78D2C013F; Sun, 20 Oct 2024 05:28:42 +0000 (UTC) From: Zijun Hu Date: Sun, 20 Oct 2024 13:27:49 +0800 Subject: [PATCH 4/6] phy: core: Add missing of_node_put() for an error handling path of _of_phy_get() MIME-Version: 1.0 Message-Id: <20241020-phy_core_fix-v1-4-078062f7da71@quicinc.com> References: <20241020-phy_core_fix-v1-0-078062f7da71@quicinc.com> In-Reply-To: <20241020-phy_core_fix-v1-0-078062f7da71@quicinc.com> To: Vinod Koul , Kishon Vijay Abraham I , Felipe Balbi , Greg Kroah-Hartman , Rob Herring , Arnd Bergmann , Lee Jones Cc: Zijun Hu , stable@vger.kernel.org, linux-phy@lists.infradead.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Zijun Hu X-Mailer: b4 0.14.1 X-Proofpoint-ORIG-GUID: UKGJg6bDUiFHKz2zU5QVA92RCrgayaQo X-Proofpoint-GUID: UKGJg6bDUiFHKz2zU5QVA92RCrgayaQo X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-20_02,2024-10-17_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 clxscore=1015 spamscore=0 malwarescore=0 phishscore=0 mlxscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2410200032 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241019_222848_833750_F83DCD0E X-CRM114-Status: GOOD ( 10.80 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org From: Zijun Hu It is wrong for _of_phy_get() not to decrease the OF node refcount which was increased by previous of_parse_phandle_with_args() when returns due to of_device_is_compatible() error. Fixed by adding of_node_put() before the error return. Fixes: b7563e2796f8 ("phy: work around 'phys' references to usb-nop-xceiv devices") Cc: stable@vger.kernel.org Signed-off-by: Zijun Hu --- drivers/phy/phy-core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 52ca590a58b9..967878b78797 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -629,8 +629,11 @@ static struct phy *_of_phy_get(struct device_node *np, int index) return ERR_PTR(-ENODEV); /* This phy type handled by the usb-phy subsystem for now */ - if (of_device_is_compatible(args.np, "usb-nop-xceiv")) + if (of_device_is_compatible(args.np, "usb-nop-xceiv")) { + /* Put refcount above of_parse_phandle_with_args() got */ + of_node_put(args.np); return ERR_PTR(-ENODEV); + } mutex_lock(&phy_provider_mutex); phy_provider = of_phy_provider_lookup(args.np);