From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 2CD79606A31A for ; Tue, 20 Oct 2026 09:38:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=pJ7iVgqw; 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; 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:References:In-Reply-To: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:List-Owner; bh=bpU4pmX+9zma9b0HMHe9OtZavzpqVSsVuDamqHfqBOM=; b=pJ7iVgqwz+lwNDhG4nAbSe6ZK4 Tsd/7Rb2earnuq8TLq8Y6y8fk7d8mjUEb1bbGCwlDQ7WcDiWR6n0C2F2b8HHDMZ7mynY3c5QrHzsr ljKv+4wcem0fN6zlXgNtNYBrVGCaAIsRb7GN5klmqrK8e7Mo/RiPW75YbgvIkDwxRuJzZjv+tLLGN 09AaHrbbz70GtiQbJfVZfIJvRI/oecUV/9xnVThqDq6e48m7MTA56R3WxQ/UnxDfc4I2D1gAfdz6T 0sXqt2zgVU9o2TcuhAYVvtj4KLLRQdVdSn+Ctx/vjKrdGs2kecYBDB0cYSIKBn868MAvfgABb0oDI Slyn29jQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xJ6I6-00000009Igw-30qK; Tue, 20 Oct 2026 09:37:54 +0000 Received: from m16.mail.163.com ([117.135.210.3]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xJ6I4-00000009Ig3-0rvC for linux-arm-kernel@lists.infradead.org; Tue, 20 Oct 2026 09:37:53 +0000 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-Archived-By: 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261020_023752_590462_AD1E2005 X-CRM114-Status: GOOD ( 13.41 ) X-Spam-Score: -1.8 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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