From nobody Mon Feb 9 21:37:16 2026 Received: from smtp85.ord1d.emailsrvr.com (smtp85.ord1d.emailsrvr.com [184.106.54.85]) (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 09CD7356A3B for ; Fri, 30 Jan 2026 17:05:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=184.106.54.85 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769792702; cv=none; b=fQlSEMMYXkCZR16o4ROP/VK0a2J8KgQ6rQuxLthGjXKIeDAaNU9bBJzLqrmwHhNam1OnY7QWhs9KZsvvUzHpZiRT6/X8fhjNlEczvfbi/O4X6fjAQLpfgAsjHkYz8NhVyQUGbCKIBPC7hush8Fk/6MIEM1Fl+57Hpzwyg8s5i2o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769792702; c=relaxed/simple; bh=M3fEKZYjOoARyYD74okbRHcLWAVCyxKYPDzop4e6tuc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EdIkoJIHNtMaKedQR3gsBC6DRqQKB/NrKQwwOOB3g4kQPyTwtu6bkfIs1imKLHy8RCVG8XTWOY1ud6VoCAX/JZMKcdmkZ4vhjCvWrAu/V0LLTHlWQAD+I9ly7L2q1Bk/ZexqdA98vmfLwELE4wPssm0RPUdvh1eS0GAyJ9gVE4Q= 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=Yb0ffG7R; arc=none smtp.client-ip=184.106.54.85 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="Yb0ffG7R" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mev.co.uk; s=20221208-6x11dpa4; t=1769792700; bh=M3fEKZYjOoARyYD74okbRHcLWAVCyxKYPDzop4e6tuc=; h=From:To:Subject:Date:From; b=Yb0ffG7RdtWbwNvFLBRjrHjivg5rXoaECCfv3EiGZeixLS+sQm2y+H2gHu3qncNYe oXPlj6xCWuSzG1ZyIPqjPHaw6ar7s8ru6Fw1Ll4P+mvqq5G3ThEd6xgm3Cd5rVfgGX h/uyEFMGfK0yaagXYU3Kv9vUHcBsaiuifIfnJABQ= X-Auth-ID: abbotti@mev.co.uk Received: by smtp19.relay.ord1d.emailsrvr.com (Authenticated sender: abbotti-AT-mev.co.uk) with ESMTPSA id A02B9602BD; Fri, 30 Jan 2026 12:04:59 -0500 (EST) From: Ian Abbott To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , Ian Abbott , H Hartley Sweeten Subject: [PATCH 26/46] comedi: multiq3: Add sanity checks for I/O base address Date: Fri, 30 Jan 2026 16:47:51 +0000 Message-ID: <20260130170416.49994-27-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-27-1 Content-Type: text/plain; charset="utf-8" The "multiq3" driver uses an admin-supplied configuration option (`it->options[0]`) to configure the I/O port base address of a Multiq-3 board. It currently allows any base address to be configured but the hardware only supports base addresses (configured by on-board jumpers) in the range 0 to 0x3F0 on 16-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/multiq3.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/comedi/drivers/multiq3.c b/drivers/comedi/drivers/mult= iq3.c index ac369e9a262d..3dde3a1876d7 100644 --- a/drivers/comedi/drivers/multiq3.c +++ b/drivers/comedi/drivers/multiq3.c @@ -259,7 +259,8 @@ static int multiq3_attach(struct comedi_device *dev, int ret; int i; =20 - ret =3D comedi_request_region(dev, it->options[0], 0x10); + ret =3D comedi_check_request_region(dev, it->options[0], 0x10, + 0, 0x3ff, 16); if (ret) return ret; =20 --=20 2.51.0