From patchwork Mon Jun 23 16:11:13 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ze Huang X-Patchwork-Id: 899308 Received: from mail-m155101.qiye.163.com (mail-m155101.qiye.163.com [101.71.155.101]) (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 9765F19C554; Mon, 23 Jun 2025 19:40:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=101.71.155.101 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750707645; cv=none; b=jPJeD1xEQUKbTQeIqMfMvfAB4nJ+kuAiZlF/r9Uk2Kge82aqnKUgwHcTzj7QzL46jI7qkzDFL3PCB8geGolUoJkKEUDWAygllaPtbdhZqG15wbYT5OjKCMcYpHZiJN9xprCgFUrvO7N4ro5BMdXpw0r3S98r3BjFmI+6QTgNhBw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750707645; c=relaxed/simple; bh=oeVpu5QnQ6dzADH8jDwya/HzQz1GbvZCFygSNBb/pdc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=PNSfi45b9/gFkd3GjJiawHICv17k2RIcB7AvKoAtUOFaOBiRX7HuYy/DPIqFS55PKsgAlyfqHGguqjoMdn2cS/EiZiEreVPLvCp79P4NoY8tcNJaCiybZcruFzx906W7WjB+0AK4v3/t/kGMqV7Zp16P6bfuIIf+jDb8SEJPpTI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn; spf=pass smtp.mailfrom=whut.edu.cn; arc=none smtp.client-ip=101.71.155.101 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=whut.edu.cn Received: from [127.0.0.1] (gy-adaptive-ssl-proxy-1-entmail-virt204.gy.ntes [27.18.107.46]) by smtp.qiye.163.com (Hmail) with ESMTP id 19a4befb4; Tue, 24 Jun 2025 00:11:23 +0800 (GMT+08:00) From: Ze Huang Date: Tue, 24 Jun 2025 00:11:13 +0800 Subject: [PATCH 1/2] pinctrl: canaan: k230: add NULL check in DT parse Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250624-k230-return-check-v1-1-6b4fc5ba0c41@whut.edu.cn> References: <20250624-k230-return-check-v1-0-6b4fc5ba0c41@whut.edu.cn> In-Reply-To: <20250624-k230-return-check-v1-0-6b4fc5ba0c41@whut.edu.cn> To: Linus Walleij , Ze Huang <18771902331@163.com> Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Ze Huang , Yao Zi X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1750695080; l=1429; i=huangze@whut.edu.cn; s=20250325; h=from:subject:message-id; bh=oeVpu5QnQ6dzADH8jDwya/HzQz1GbvZCFygSNBb/pdc=; b=08O/OJqdhaptAZ8XPC9n41X9RUWWU9Fh8iHKgm7F4Qnc13ZXjUaSiy3wtcUfSlAafuPFJNgbo X42nDIwQZHLDjrU7DXAfzUtPZrSv+1sHvXbgEa8zvjK2qvdjbIb+EUm X-Developer-Key: i=huangze@whut.edu.cn; a=ed25519; pk=C3zfn/kH6oMJickaXBa8dxTZO68EBiD93F+tAenboRA= X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWS1ZQUlXWQ8JGhUIEh9ZQVlCHUNPVk4YTk4ZTUNNS0lMHlYeHw5VEwETFhoSFy QUDg9ZV1kYEgtZQVlJTFVKQ1VKS0xVT01ZV1kWGg8SFR0UWUFZT0tIVUpLSEpOTEpVSktLVUpCS0 tZBg++ X-HM-Tid: 0a979d8efcb603a1kunm95855067303bfd X-HM-MType: 10 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6N1E6Exw6IjE1EiICCE8DTj03 Gi4KFEtVSlVKTE5LTUJOS0NOQk5OVTMWGhIXVRMOGhUcAR47DBMOD1UeHw5VGBVFWVdZEgtZQVlJ TFVKQ1VKS0xVT01ZV1kIAVlBSU5PSzcG Add a NULL check for the return value of of_get_property() when retrieving the "pinmux" property in the group parser. This avoids a potential NULL pointer dereference if the property is missing from the device tree node. Also fix a typo ("sintenel") in the device ID match table comment, correcting it to "sentinel". Fixes: 545887eab6f6 ("pinctrl: canaan: Add support for k230 SoC") Reported-by: Yao Zi Signed-off-by: Ze Huang --- drivers/pinctrl/pinctrl-k230.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinctrl-k230.c b/drivers/pinctrl/pinctrl-k230.c index a9b4627b46b01237801103df566b9391f8be21b8..4976308e62372c744738dd8372e73b2494e38e0b 100644 --- a/drivers/pinctrl/pinctrl-k230.c +++ b/drivers/pinctrl/pinctrl-k230.c @@ -477,6 +477,10 @@ static int k230_pinctrl_parse_groups(struct device_node *np, grp->name = np->name; list = of_get_property(np, "pinmux", &size); + if (!list) { + dev_err(dev, "failed to get pinmux property\n"); + return -EINVAL; + } size /= sizeof(*list); grp->num_pins = size; @@ -623,7 +627,7 @@ static int k230_pinctrl_probe(struct platform_device *pdev) static const struct of_device_id k230_dt_ids[] = { { .compatible = "canaan,k230-pinctrl", }, - { /* sintenel */ } + { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, k230_dt_ids);