From nobody Wed Dec 17 09:00:13 2025 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C63BD266B41; Fri, 26 Sep 2025 09:19:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758878360; cv=none; b=ql3LOfXTtUP5v9swLZxN2uuvuf8mZh5Zji/0q4xtkEWl6JCTiOh2Pw4VnZITPuwyijOYsDYeEFwwtAGEjcdVrNEKddQ/btAupXgzYFHWunoFFNZIjt5cTcrqylgIoSXVA2EMUCjOF1h5EQp4zCk4WGgLuBlXbjzJP56vamZjTqs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758878360; c=relaxed/simple; bh=h81Pi6+hVHayKs+lBWRxjmOnbBU266frO3ObIJbkkxI=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=AmDLZTd37SnVZf9Ar8k8JJAZn4ThGQARnZzJoqC32c/btVG4i4gVoMaPR8fmeE88mXm/Mc7ONgNTZu6HlvQaxHb3cylF2H5/I1D7GvdP/Pgx/B0Rr8C63TqpJhXlXcIcE2TDdSj7yATbHxN0zQP5MAccFv/vXWMoA39Tw3O8dCA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=ouf21ACB; arc=none smtp.client-ip=117.135.210.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="ouf21ACB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=o1 ctLlTcffIW/5PghVStza+SrGegLQjDqtOF1cbRv+8=; b=ouf21ACBACrrYmynBX 4SBQAGL2HZmh2uSTKeCvp5UwYxPGoEuGUfqTz+5JBMJEDTKhXVnOX3s10Jmy6kCg S26w7FUFdgy9KTa/fRLd0KNVvSoTSGXMOjsCMcFZ3iKvows0j8AhH8TT/MH3b1K1 QtSvEu53ZUAY+dJfIn03wNI58= Received: from localhost.localdomain (unknown []) by gzsmtp3 (Coremail) with SMTP id PigvCgCXDBRIWtZon8J4AA--.11019S4; Fri, 26 Sep 2025 17:18:02 +0800 (CST) From: Haoxiang Li To: maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, andrzej.hajda@intel.com, treding@nvidia.com, kyungmin.park@samsung.com Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Haoxiang Li , stable@vger.kernel.org Subject: [PATCH] drm: mipi-dsi: Fix an API misuse in mipi_dsi_device_register_full() Date: Fri, 26 Sep 2025 17:17:58 +0800 Message-Id: <20250926091758.10069-1-haoxiang_li2024@163.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: PigvCgCXDBRIWtZon8J4AA--.11019S4 X-Coremail-Antispam: 1Uf129KBjvdXoWrurWDKFyrJrWfJw13GrW3Wrg_yoWfWrg_uF 10v3s7Xr4kC3srJF13Aa1fZryayFn0vr4rWr1UtF9Yy3yaqrWDX34DuryFqrWUWF43AF98 Z3WjqF1fAa13KjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRRApnDUUUUU== X-CM-SenderInfo: xkdr5xpdqjszblsqjki6rwjhhfrp/1tbiMx-UbmjWV-5H7QAAsr Content-Type: text/plain; charset="utf-8" mipi_dsi_device_alloc() calls device_initialize() to initialize value "&dsi->dev". Thus "dsi" should be freed using put_device() in error handling path. Fixes: 068a00233969 ("drm: Add MIPI DSI bus support") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li Reviewed-by: Dmitry Baryshkov --- drivers/gpu/drm/drm_mipi_dsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 3a9b3278a6e3..21d9aa29ac34 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -233,7 +233,7 @@ mipi_dsi_device_register_full(struct mipi_dsi_host *hos= t, ret =3D mipi_dsi_device_add(dsi); if (ret) { dev_err(host->dev, "failed to add DSI device %d\n", ret); - kfree(dsi); + put_device(&dsi->dev); return ERR_PTR(ret); } =20 --=20 2.25.1