From nobody Mon Dec 15 19:06:23 2025 Received: from mail-pl1-f179.google.com (mail-pl1-f179.google.com [209.85.214.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9B7F12D0C90 for ; Wed, 29 Oct 2025 07:41:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761723702; cv=none; b=q3PqdPF+Ujmzo+Jw1d8fJk5jzSDtQ1kDFxzFzewiSE+bH4d7ZjGG0sW41vre9kYlMobTtE197TGm5TzF2hFyU4qoLnHRDRp5uPbyHbrMJ7BJ0dkKPuiBMJ81IDjHBJPJKUTXydECjPSGSqS5p0MbQxNWYM7JOsxsCycc82gztpA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761723702; c=relaxed/simple; bh=vQSgQhpSPXq7YicGVSd0ynrLW5738W31iJ/iUBFQPSQ=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=kd/nlZ9YwyR3DXBkSROvDZBEZhRZyIcyCYl2mBUosMihgZrGwoFX+Ha4daid0zbaGEyeNI/DPV5qQTxL/o6UGGUZ4c+EANT7lGXYS1LxD9a/7hKIzBwyxeFrUpQTYzo1+o0dnzkO2c6XPuyzl2C8CsW5Z0CBa4wBPPnjfi+WqZU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Sgf3Bxev; arc=none smtp.client-ip=209.85.214.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Sgf3Bxev" Received: by mail-pl1-f179.google.com with SMTP id d9443c01a7336-2698d47e776so55447325ad.1 for ; Wed, 29 Oct 2025 00:41:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1761723700; x=1762328500; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=qgvDUTgmwUbybBiqh6wci1MBiFa+WkYYBAxgF2SWiwA=; b=Sgf3BxevDX/53PJQwR6IpjVyabiMVmP/SxtSoawkI90iHgMd3jOybNIihdS47yLY/Y +cC3poZDv+IUy6Cuh71ayjcf5QT/qSxNx6j01x3Ze8PHac7Zp8LjdB0VIy3t1kql4FxD uLe3JD/M75kyyOOkDwg8datHGwCW29RDdje2lu9L/PF2mQelk6PG50knIpryktv8BixC X9IFzdNgHivJ0vkjHk2CDBzqw7urYaBojmZX6OvgrJHg+jN5/DHjWj7o30joH2gEYa6P RW6i+y0fJENk5+YErUTj/bjWa/cuVJcubkq3QqCXekeMSVQ6k0sllxf3gHMraphHt6ff tQqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761723700; x=1762328500; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=qgvDUTgmwUbybBiqh6wci1MBiFa+WkYYBAxgF2SWiwA=; b=P0FYDZy0qzTa0pYvBsUGtJNPnPjDzytY/8Iz+fvZr7v/e4bn7yK+MQtZ252mbrAveX y01UvJOkgI1PfinrODpTT1BN2zcJc44CwoFkGj0hk50/VmMxm/lf1RYVtfYxSJOhYZv3 X/Xlm+7lJViw1c9CuoQxJNkcFiN+mzCqalNDMNKJCp5Tfos/r3AWa9iOOjoSUXESL21I XNm40pK1dIAKtOC1ZPCRPKGf6gB4QSlI3yYQXT5Ftfx5ljjdx5ZywVCbR61lzW2zDvYi QW+gjQmVyTRbIuRNFnRYrq00kj8o3TzNf8kBiQR8RiyQeZO54n7M8ToFVGQibT+iOa5/ ukFw== X-Forwarded-Encrypted: i=1; AJvYcCWEX77n3g8cSQWOqinVKz6mK1B31JPkaTifCuOQutFURM1B2dMUqVll8wm0v6cUus4DVKQyXz04D2KOw4c=@vger.kernel.org X-Gm-Message-State: AOJu0Yxb9DbOVcgmiaP2knbxOaI0r4tfZbmAJVenOl0IaS1SU4lthUCz S4kPbyERNe8tVK6Q9l6ng3ugVVAiaSGfyrYICVymPwXqloub0azu6Wm8 X-Gm-Gg: ASbGncsiEm8jPrq9x2c001jgjo/iVrlDg9i7czTyMQfSQ9jXSctWTUc+glonU+YRbBw ZXsgPqaD7b6ucrUYGpjzt0l/alfsuV9Ig7v8zgBcVJA06wrLVJitOKtqMO+7RW0uCdl4yqgeFMH d0xqXUIB1gYVTYq6WZ9B5jcv1SISBUyvOU63S2+/JX3MjhraBVEk9iWFyeSRO/NszukkpXrfa3e J11CJG1nO/gKf9D4nHtqoqZaGxzGT30VUtMU6ZCln8QCV9MeyHJyMG+6ix2dPZb9QOWkouxZMmy /ATsnXbG/lPWglM1etMarxjyoY6EAeSKIf1akdCnTMZJlIVrX2jrNabMUrv/+d6V3orL5Q4fnt8 5T/8bomz//Xd+FMDPW/s8x0fZXywXgKF8+LFHlqdPMAx+Fuqph30kaEsoSpTGN44GlG7PFgYLZ+ 5WHZrqexUtlFCvsl8AEbUqnQ== X-Google-Smtp-Source: AGHT+IEAqSeL49I0O53+T8EYYG0n4Be/S9PQxC/LftWWFjftQd/hhQp8QU08hja4QrlQTuil7K/59Q== X-Received: by 2002:a17:903:234c:b0:246:4077:4563 with SMTP id d9443c01a7336-294def2da22mr23417225ad.34.1761723699803; Wed, 29 Oct 2025 00:41:39 -0700 (PDT) Received: from localhost.localdomain ([124.77.218.104]) by smtp.googlemail.com with ESMTPSA id 98e67ed59e1d1-33fed706449sm14495814a91.2.2025.10.29.00.41.34 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 29 Oct 2025 00:41:39 -0700 (PDT) From: Miaoqian Lin To: Inki Dae , Jagan Teki , Marek Szyprowski , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Kaustabh Chakraborty , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: linmq006@gmail.com, stable@vger.kernel.org Subject: [PATCH] drm/bridge: samsung-dsim: Fix device node reference leak in samsung_dsim_parse_dt Date: Wed, 29 Oct 2025 15:41:20 +0800 Message-Id: <20251029074121.15260-1-linmq006@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) 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 Content-Type: text/plain; charset="utf-8" The function samsung_dsim_parse_dt() calls of_graph_get_endpoint_by_regs() to get the endpoint device node, but fails to call of_node_put() to release the reference when the function returns. This results in a device node reference leak. Fix this by adding the missing of_node_put() call before returning from the function. Found via static analysis and code review. Fixes: 77169a11d4e9 ("drm/bridge: samsung-dsim: add driver support for exyn= os7870 DSIM bridge") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin --- drivers/gpu/drm/bridge/samsung-dsim.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge= /samsung-dsim.c index eabc4c32f6ab..1a5acd5077ad 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -2086,6 +2086,7 @@ static int samsung_dsim_parse_dt(struct samsung_dsim = *dsi) if (lane_polarities[1]) dsi->swap_dn_dp_data =3D true; } + of_node_put(endpoint); =20 return 0; } --=20 2.39.5 (Apple Git-154)