From nobody Mon Feb 9 19:26:02 2026 Received: from smtp80.ord1d.emailsrvr.com (smtp80.ord1d.emailsrvr.com [184.106.54.80]) (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 760F33502B3 for ; Fri, 30 Jan 2026 17:11:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=184.106.54.80 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769793109; cv=none; b=YvZ7UwLTaFvkEfK1lpKM5+CbRoiy0BhZtx8VPAt5MXoDiLvW6MdTqIoQD22sxvPo6013T3a4NhAwui/cBtygdZComj+MoFAU/wHbK6EZa0u/cWTQyu79V/uXDMyzsmI2ZftPGbGT9PyANlloSHioPuIFWrvb5apg7aC/QyvIDuw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769793109; c=relaxed/simple; bh=+Rff5K5qS4M4MT8VnzZt57TWKYaUtisccVsjKo75Sho=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=U0gqrinvYsvRo3St1bhGYAn3oLX2bJoB/Q4R2Qlrl4n5P3qZNLdRLCSwxDcIHeCz6y/nU6W1oh7rw4lmHC+phCmsma/80OXUeYuFWHBbS46/t9qovO8CV8nrw+y0stcgtGqtjDRMVMU4z4CaWbtF6cp8qy7H/s1cPX2OM3Ag+YU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mev.co.uk; spf=pass smtp.mailfrom=mev.co.uk; dkim=pass (1024-bit key) header.d=mev.co.uk header.i=@mev.co.uk header.b=o/b0/k1Y; arc=none smtp.client-ip=184.106.54.80 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mev.co.uk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mev.co.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mev.co.uk header.i=@mev.co.uk header.b="o/b0/k1Y" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mev.co.uk; s=20221208-6x11dpa4; t=1769792675; bh=+Rff5K5qS4M4MT8VnzZt57TWKYaUtisccVsjKo75Sho=; h=From:To:Subject:Date:From; b=o/b0/k1YNH+G4TC8HIHdIGyjIZf5Vqy7FY7sQLpBeiXODs9EIL94Zmwc8HD6PV2Fc pIXNetxmUZK51wcs7+Lcl3+knGPDI4/5aCkVti84GETcnR1g9I6GT/4D09dAtIlk95 w2zDcr5k71PGTG7db/uD6mPc9kgwybgzGS5NwQfE= X-Auth-ID: abbotti@mev.co.uk Received: by smtp19.relay.ord1d.emailsrvr.com (Authenticated sender: abbotti-AT-mev.co.uk) with ESMTPSA id 57FCB6029E; Fri, 30 Jan 2026 12:04:34 -0500 (EST) From: Ian Abbott To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , Ian Abbott , H Hartley Sweeten Subject: [PATCH 04/46] comedi: aio_aio12_8: Add sanity checks for I/O base address Date: Fri, 30 Jan 2026 16:47:29 +0000 Message-ID: <20260130170416.49994-5-abbotti@mev.co.uk> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260130170416.49994-1-abbotti@mev.co.uk> References: <20260130170416.49994-1-abbotti@mev.co.uk> 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 X-Classification-ID: 429d5722-7f90-4557-8586-08913fa85e9e-5-1 Content-Type: text/plain; charset="utf-8" The "aio_aio12_8" driver uses an admin-supplied configuration option (`it->options[0]`) to configure the I/O port base address of a supported board (AIO12-8, AI12-8, or AO12-4). It currently allows any base address to be configured but the hardware only supports base addresses (set by on-board jumpers) in the range 0x100 to 0x3C0 on 32-byte boundaries. Add a sanity check to ensure the device is not configured at an unsupported base address. Signed-off-by: Ian Abbott --- drivers/comedi/drivers/aio_aio12_8.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/comedi/drivers/aio_aio12_8.c b/drivers/comedi/drivers/= aio_aio12_8.c index 227a86a3a760..1d9e14981928 100644 --- a/drivers/comedi/drivers/aio_aio12_8.c +++ b/drivers/comedi/drivers/aio_aio12_8.c @@ -202,7 +202,8 @@ static int aio_aio12_8_attach(struct comedi_device *dev, struct comedi_subdevice *s; int ret; =20 - ret =3D comedi_request_region(dev, it->options[0], 32); + ret =3D comedi_check_request_region(dev, it->options[0], 32, + 0x100, 0x3ff, 32); if (ret) return ret; =20 --=20 2.51.0