From nobody Mon Feb 9 18:43:24 2026 Received: from smtp86.ord1d.emailsrvr.com (smtp86.ord1d.emailsrvr.com [184.106.54.86]) (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 53C43356A07 for ; Fri, 30 Jan 2026 17:04:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=184.106.54.86 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769792683; cv=none; b=cdNAfQHhbmL1siNieVyd9odXVPsRVRlVJISijPUjZqfYNT+clbMutzbsi93YlO9kXz6IKkETxIm5kh2jWE2xDSOHFoNG0FEEWaWdZ43XFQyNkU4Q1Vr+rt6Gt2EZCYZQW0LMbP+6R54J1mRlQaEkMwhhjd3toV0Pz95A6dg46vI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769792683; c=relaxed/simple; bh=1Y0SZ//9gz477lVmgAauRZwxck0cq0LKjL2wAPKFwGc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Jh1fAt03iLNAMKq3ZXmQIlc2Goq7lbZp8+sq35VkOdkC/TU4qA5Uar8sj4d0XrYxPCTIcfPnWgUEuHHlIlGGAtZw7EAtcSylF69xIhxvLfzpU6eSCGhtS0ka50IYhjmv7ONMpe8Ks4ZGaA4Od3xUhPvf9v6OS/m0R7d7v+steDk= 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=C6oLDPRE; arc=none smtp.client-ip=184.106.54.86 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="C6oLDPRE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mev.co.uk; s=20221208-6x11dpa4; t=1769792679; bh=1Y0SZ//9gz477lVmgAauRZwxck0cq0LKjL2wAPKFwGc=; h=From:To:Subject:Date:From; b=C6oLDPREEPGypXRFCvmcllXBUUkXkX26hRZPH5jiHuF50Q7k10gmhyysFqqEJlJCs TJCWqkOyx20cJ4EuRcHfg8j0pwnZoqUsGSag0FwNjy3sI4MrNK67Ty0v1TzManKdyN Ybu78PIT1kiMpeRbxNgH45HIbqODyzS9DRdVmJqY= X-Auth-ID: abbotti@mev.co.uk Received: by smtp19.relay.ord1d.emailsrvr.com (Authenticated sender: abbotti-AT-mev.co.uk) with ESMTPSA id 73246602EF; Fri, 30 Jan 2026 12:04:38 -0500 (EST) From: Ian Abbott To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , Ian Abbott , H Hartley Sweeten Subject: [PATCH 08/46] comedi: amplc_pc263: Add sanity checks for I/O base address Date: Fri, 30 Jan 2026 16:47:33 +0000 Message-ID: <20260130170416.49994-9-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-9-1 Content-Type: text/plain; charset="utf-8" The "amplc_pc263" driver uses an admin-supplied configuration option (`it->options[0]`) to configure the I/O port base address of a supported PC263 board. It currently allows any base address to be configured but the hardware only supports base addresses (set by on-board DIP switches) in the range 0 to 0x7FE on 2-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/amplc_pc263.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/comedi/drivers/amplc_pc263.c b/drivers/comedi/drivers/= amplc_pc263.c index d7f088a8a5e3..e2196dc9d426 100644 --- a/drivers/comedi/drivers/amplc_pc263.c +++ b/drivers/comedi/drivers/amplc_pc263.c @@ -61,7 +61,8 @@ static int pc263_attach(struct comedi_device *dev, struct= comedi_devconfig *it) struct comedi_subdevice *s; int ret; =20 - ret =3D comedi_request_region(dev, it->options[0], 0x2); + ret =3D comedi_check_request_region(dev, it->options[0], 0x2, + 0, 0x7ff, 2); if (ret) return ret; =20 --=20 2.51.0