From patchwork Tue Nov 5 11:02:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 13862800 X-Patchwork-Delegate: kieran@bingham.xyz Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4A5601CB53F; Tue, 5 Nov 2024 11:03:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730804590; cv=none; b=lFnAPSLhoRq6ZRTeS5rC+YF+hkqqUsYx7oqfut0sWq0Nh3wE/85BK/47d5OI3XvyfxgSTLSe40GVDnR1ix8fyjmX7Wl83I9S0a6jMoACKJoNfcYVkUGS8LqwGA3UPdEplSVAewNA3fF4qKrtcLKKNawO/1Lj6WoO+u/mf+dRi4c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730804590; c=relaxed/simple; bh=80gnAaZk5mK4yh6QOItjebhsujRhtYtlTv/zIOp9BQc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=s2rey11O1bJH1rk5BA/g/jOuhjDdXMRihwsSvE6W2Y5YhmSDu5FJ+6teZxQKUtdRpgenTqJUn+YGl2+zltF3D6KLlDZ2As+1p6ocFAsukkmIJWa8nTXZ1Y7r67Y8p/+Zfoem1qcK/igwaBZ9UrHqssc59mv5YvYiDV4nae7WEIM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=bp.renesas.com; spf=pass smtp.mailfrom=bp.renesas.com; arc=none smtp.client-ip=210.160.252.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=bp.renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bp.renesas.com X-IronPort-AV: E=Sophos;i="6.11,259,1725289200"; d="scan'208";a="227918973" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 05 Nov 2024 20:03:08 +0900 Received: from localhost.localdomain (unknown [10.226.92.174]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id BBD2841CF051; Tue, 5 Nov 2024 20:02:50 +0900 (JST) From: Biju Das To: Andrzej Hajda , Neil Armstrong , Robert Foss , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: Biju Das , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Archit Taneja , dri-devel@lists.freedesktop.org, Geert Uytterhoeven , Prabhakar Mahadev Lad , Biju Das , stable@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Hien Huynh Subject: [PATCH 2/2] drm: adv7511: Fix out-of-bounds array in clock_div_by_lanes Date: Tue, 5 Nov 2024 11:02:28 +0000 Message-ID: <20241105110236.112631-3-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241105110236.112631-1-biju.das.jz@bp.renesas.com> References: <20241105110236.112631-1-biju.das.jz@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Fix out-of-bounds array in adv7511_dsi_config_timing_gen() for clock_div_by_lanes[], when dsi lanes = 1. Fixes: 78fa479d703c ("drm/bridge: adv7533: Use internal timing generator") Reported-by: Hien Huynh Signed-off-by: Biju Das --- drivers/gpu/drm/bridge/adv7511/adv7533.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c index 3e57ba838e5e..0c2236e53af5 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7533.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c @@ -185,6 +185,9 @@ int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv) adv->use_timing_gen = !of_property_read_bool(np, "adi,disable-timing-generator"); + if (adv->use_timing_gen && num_lanes == 1) + return -EINVAL; + /* TODO: Check if these need to be parsed by DT or not */ adv->rgb = true; adv->embedded_sync = false;