From mboxrd@z Thu Jan 1 00:00:00 1970 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 3E0A7C982E1 for ; Mon, 21 Sep 2026 08:51:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=ZAoUJ5n70t4dRNpVYU2ESN0IQMx9sWFKtOYuOw8UYwc=; b=ugR1zeJaXpDOf2sAznlC9O3SL2 Cda6tD5MlUVIakBW+63oXRXGmyVNjo7Oz095JxHUAh3f8UgEhr2mAeNDPk2Jw41ktO81xWWtVR498 sJ4TUjqNe6LuEEZDeVQ3FlxcvH1KvsluBbESmVWmLpbTwm6QAOEZ6Ua1K7sRoxRM0HUFUJcGrau2b bJtTxGazbRlUR7GRge2uTD6eiQv72bOZgJo1SkdawANH7XJFijRFniyNqHnW3hHeh7iy4L0AElk6G McDfI57MAZeUywww/DOhCYo5xLPnwycYaaGgVoGIarzGLDnjLUA1lIFO8pErI4U6JPTryLNkHO0Ta coox+v/g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x8ZkM-00000001P4u-4Aps; Mon, 21 Sep 2026 08:51:34 +0000 Received: from mail-pj2-x11.google.com ([2607:f8b0:4864:39::11]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x8ZkI-00000001P3g-2nlj for linux-arm-kernel@lists.infradead.org; Mon, 21 Sep 2026 08:51:32 +0000 Received: by mail-pj2-x11.google.com with SMTP id 98e67ed59e1d1-396ccb1a990so2411660a91.3 for ; Mon, 21 Sep 2026 01:51:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1789980689; x=1790585489; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=ZAoUJ5n70t4dRNpVYU2ESN0IQMx9sWFKtOYuOw8UYwc=; b=QKyp69MY7ZL/M/iL2fZGr9dYe5BxawupqmcL3mxeIpAqnup1qWmQ1HPU3KGdO5uONW UxSeG2NrM5TNBy0yDRXA3FzOMyCFUXa/kc4ztTKoFKf/KfAA8E6/qgNEhARKxlj/gkW7 W+ogLZyYdv4OZB4gi4CqozlbPljKvURxPPcdf9DASAq1Sx7GQ+soYI9FBrZXPCJ8huoy 8zYNEyd1/utSEiMkxZN0oNjEgVi3pULL4MB03G4+WZKbEtysjae8NwnJt3ySGwM8tn0q BifO4UKADhNRLEDm7yAjX/hlDs8FhsYzuGFBzAQFkZg2qHtqdp29KBhteVu6uS1Ewc2K WfBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789980689; x=1790585489; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=ZAoUJ5n70t4dRNpVYU2ESN0IQMx9sWFKtOYuOw8UYwc=; b=xEOPBe/Cwdvq/TWxiQlUnx7vFZF17BwOJkLLC3Y50ymVaqBH+9dP5QNm7qhX0gXneB J5SpWRGbFARy2ZwlBZnRRFCaq6YgpCQ3dZMbl86+pZrkgGk/lwQHg/3Gv41Cb4v/Xw3f XTS3vf5EqTli8qrOKdZyT8MgiSYrnaVUObvVMLDsPSA34UOxlCm//74J7Tzjgno5S2OZ IBjQO2mCNeHVtoFd7XeDDb8noCKemB9vB8+4XqYXje50AEShNfnaqvqaxq0oDGlDZK/G /r1rElnfhfq23z0bayBNSfVajnQgMXcDwBCYVLt8Y1jH5OxLtom986gc4HyHGpQtWxh8 xXrA== X-Forwarded-Encrypted: i=1; AKwUvBzQb0lx1D5oW12+p4t2uMWiRLZa5E8BXgRuU/c5Wdbb9uDm2jqBjz7XNExySPstEmnwd2VxpUMGmzHKVgQYs2yS@lists.infradead.org X-Gm-Message-State: AFuF++n7LJD2M1PXrbA5bFQ0cN/osExieWcBX6PiQbIAP1pM1Mt6KTnI oJlpdC0N0TYfXdqALtre4Ywe3wBNlmXe65qcGYH2jTXEsZKbx6WshBM5 X-Gm-Gg: AYBFou3kKPP9dsQDpYPiPb70RMKQlhKd9T9YyTVIu/nwLre0RabFkZj5USwi3Rujr9P HLROAKLnGcjIzmFzgVMstUB3UYFW68hoCw5qtIAGpviCCbubdpdB5ScRvmOBbxQSkSVzdK0IA+m DVYkyxFvPh0KGx/B49GYLfm4nD2XE69SN2VI/ij4h5pDMjXkPOmAnOhxCWix8G81Z8Ow2hp+sTM L8mJP92xcQVvO14GXeRU8DOudKYjgilMG3IXGX0lTbd+ddqUcwP+hKgiCX/Rozxfa1LJgBUOjlV j5kQRXxVs03mE6EJ+rj31VfkBDD89hpzWDnC4prP5a5aHs2S0V8z25G3VE7EvC7PU72jIsqio0X 6de1qp/PnLMvZyKuTfECirdDpIGSbOVVlBzy71XF9iPdNii0vsOxhEkf9RS5Sr5JwSFjQ11cKju U5zBUzgEdKkCsrpmU4p5gsf7IXZmEU4XZrMfQXI4f2oC9YFF+p5rplPg== X-Received: by 2002:a17:90b:1b0c:b0:38e:2517:5d1f with SMTP id 98e67ed59e1d1-39e54bbc32fmr15958386a91.9.1789980689350; Mon, 21 Sep 2026 01:51:29 -0700 (PDT) Received: from lgs.. ([2001:250:5800:1002::de93]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39e55b83602sm7853716a91.1.2026.09.21.01.51.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Sep 2026 01:51:29 -0700 (PDT) From: Guangshuo Li To: Bin Liu , Greg Kroah-Hartman , Matthias Brugger , AngeloGioacchino Del Regno , Yonglong Wu , Min Guo , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Guangshuo Li , stable@vger.kernel.org Subject: [PATCH] usb: musb: mediatek: fix child device leak Date: Mon, 21 Sep 2026 16:51:19 +0800 Message-ID: <20260921085119.308981-1-lgs201920130244@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260921_015131_952910_9CA9FDE5 X-CRM114-Status: GOOD ( 14.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org mtk_musb_probe() populates child platform devices using of_platform_populate(), but neither the probe error paths nor the driver remove path depopulate them. If any initialization step after of_platform_populate() fails, the probe returns without unregistering the populated child devices. Likewise, the children remain registered when the driver is later unbound. Use devm_of_platform_populate() so the populated child devices are automatically depopulated when probe fails or the driver is unbound. The issue was identified by a static analysis tool I developed and confirmed by manual review. Fixes: 0990366bab3c ("usb: musb: Add support for MediaTek musb controller") Cc: stable@vger.kernel.org Signed-off-by: Guangshuo Li --- drivers/usb/musb/mediatek.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/musb/mediatek.c b/drivers/usb/musb/mediatek.c index c6cbe718b1da..3aff0add2faf 100644 --- a/drivers/usb/musb/mediatek.c +++ b/drivers/usb/musb/mediatek.c @@ -415,7 +415,7 @@ static int mtk_musb_probe(struct platform_device *pdev) if (!pdata) return -ENOMEM; - ret = of_platform_populate(np, NULL, NULL, dev); + ret = devm_of_platform_populate(dev); if (ret) return dev_err_probe(dev, ret, "failed to create child devices at %p\n", np); -- 2.43.0