From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=220.197.31.4 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792489089; b=dqbNEsTEAbx7pp592AsPqEqU1AYTvgHKKfpuURG1RCoXPIUdaTdshPUFpLwsvoLhEy7b LP7v0U5K4sdaU8ifj4EhNVI/YO39Or1woVOGC4uu/3iN0IgHwe0lGtoBqpYY8B8kezXST iCOmBkjTqifUhUixau+b6Wgl6JIPIjoaOf7B1yxbUKp4PAGfgwrswNpGYni6wGLOwnjq/ 4DW+KjiWjh6P64/gHzy13TBBoQDn0bvwg86Fd0rr5sd6VYI4gYOijCbfxCPKedF+IYtz1 dWSFw2PCBBFANDvMGgniDQ++ubfttkkg5+r2MC1uvRU6k7LoJW3xNAvTJ1R0XADvM7Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792489089; h=DMARC-Filter:DKIM-Signature:Received:From:To:Cc:Subject:Date: Message-Id:X-Mailer:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding:X-CM-TRANSID:X-Coremail-Antispam: X-CM-SenderInfo; bh=bpU4pmX+9zma9b0HMHe9OtZavzpqVSsVuDamqHfqBOM=; b=VI11GFVuj0JBdYi+wv1ec2bMeMIBZPC0SXrYTBpoSYveRm3YXI1XB/hSQGr2buMuDGBZ FChrZB0OkImxYc3wMVdyNBZ8Z2+I7kOLO84Q9VYtnzi6Z5cohVlZj6whWLLnt3NlACGwA f9I4KkCk/B3D4/mACoMvtgy2WFRli5dKX5y6auipEJwss37yhhZgjNNnIK5KkLNdUwDz/ 16DiKKBYYNYlBne1Sg91NIdz6NZQHielW+pcnxZvG4GMzzcAKATs67LHqHuk8y9OxS6YH PCaC84RL+A2eOjNK/NPDv6RqOSfz5xCAp3HiJBb7wbtrale/4TLdSSe7fIVDJpCKbsQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass header.d=163.com header.i=@163.com header.a=rsa-sha256 header.s=s110527 header.b=mS31Dw1N; arc=none smtp.remote-ip=220.197.31.4 Received: from m16.mail.163.com (m16.mail.163.com [220.197.31.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9DBEC606A319; Tue, 20 Oct 2026 09:38:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 9DBEC606A319 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, unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256 header.s=s110527 header.b=mS31Dw1N 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=bp U4pmX+9zma9b0HMHe9OtZavzpqVSsVuDamqHfqBOM=; b=mS31Dw1N3PrN7zkDWi XwyomNptkrkBuly/amAqP+WmRRjI0TWr6DiJCqezSo/4vO5krC5Hr14I+iaRjKZK 8QUVvFId3VA5yksxyZaF7ownrnZOx5VlX3RQovkSrw7Dr3GEqQFTWeF31QyQJ63m tFyyo8v6sP8oRkT6BduT0JPvY= Received: from pc.localdomain (unknown []) by gzsmtp1 (Coremail) with SMTP id PCgvCgD3_4ImNtdqupV5Aw--.29320S4; Tue, 20 Oct 2026 17:36:42 +0800 (CST) From: Jiale Yao To: Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Shawn Guo , Huang Shijie , imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Subject: [PATCH 2/3] bus: imx-weim: reject devices without match data Date: Tue, 20 Oct 2026 17:36:34 +0800 Message-Id: <20261020093637.1654161-3-yaojiale02@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261020093637.1654161-1-yaojiale02@163.com> References: <20261020093637.1654161-1-yaojiale02@163.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:PCgvCgD3_4ImNtdqupV5Aw--.29320S4 X-Coremail-Antispam: 1Uf129KBjvJXoW7Zw13XryrKw4DWF43GFWUXFb_yoW8JFy8pF 40gFy3tryUWw47Gw1UAr4UZFy5uFs2k3yDKFy8uwnY9r95tFyDXryFq345u3WFkrZY9a13 tF4ktFy8Wa4UWrJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07jzmhrUUUUU= X-CM-SenderInfo: x1dryxhdohiji6rwjhhfrp/xtbC8AsoYmrXNis04wAA3G Platform driver_override can bind a device to this driver without a matching OF entry. In that case, device_get_match_data() returns NULL and weim_parse_dt() dereferences it while configuring the controller. Reject devices without match data before parsing the device tree. Fixes: 85bf6d4e4b10 ("drivers: bus: add a new driver for WEIM") Cc: stable@vger.kernel.org Signed-off-by: Jiale Yao --- drivers/bus/imx-weim.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c index 87070155b057..3ecad0e453cc 100644 --- a/drivers/bus/imx-weim.c +++ b/drivers/bus/imx-weim.c @@ -205,13 +205,17 @@ static int weim_timing_setup(struct device *dev, struct device_node *np, static int weim_parse_dt(struct platform_device *pdev) { - const struct imx_weim_devtype *devtype = device_get_match_data(&pdev->dev); + const struct imx_weim_devtype *devtype; int ret = 0, have_child = 0; struct device_node *child; struct weim_priv *priv; void __iomem *base; u32 reg; + devtype = device_get_match_data(&pdev->dev); + if (!devtype) + return -ENODATA; + if (devtype == &imx50_weim_devtype) { ret = imx_weim_gpr_setup(pdev); if (ret) -- 2.34.1