From 3389e476ec87fd210eaa0b071e148c8dbe0515ba Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Fri, 30 Jan 2026 16:47:52 +0000 Subject: [PATCH] comedi: ni_at_a2150: Add sanity checks for I/O base address The "ni_at_a2150" driver uses an admin-supplied configuration option (`it->options[0]`) to configure the I/O port base address of an AT-A2150 series 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 0x3E0 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 Link: https://patch.msgid.link/20260130170416.49994-28-abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman --- drivers/comedi/drivers/ni_at_a2150.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/comedi/drivers/ni_at_a2150.c b/drivers/comedi/drivers/ni_at_a2150.c index e4e5a0ebd195..44221c928e32 100644 --- a/drivers/comedi/drivers/ni_at_a2150.c +++ b/drivers/comedi/drivers/ni_at_a2150.c @@ -694,7 +694,8 @@ static int a2150_attach(struct comedi_device *dev, struct comedi_devconfig *it) if (!devpriv) return -ENOMEM; - ret = comedi_request_region(dev, it->options[0], 0x1c); + ret = comedi_check_request_region(dev, it->options[0], 0x1c, + 0, 0x3ff, 32); if (ret) return ret;