diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2026-01-30 19:47:52 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 16:49:38 +0300 |
| commit | 3389e476ec87fd210eaa0b071e148c8dbe0515ba (patch) | |
| tree | 8048f5c79cdce4ceadaf88a5971f7700db0dc7a8 | |
| parent | 66563dd6e3c5860e0a8b4b64a92f2ea1daf603b3 (diff) | |
| download | linux-3389e476ec87fd210eaa0b071e148c8dbe0515ba.tar.xz | |
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 <abbotti@mev.co.uk>
Link: https://patch.msgid.link/20260130170416.49994-28-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/comedi/drivers/ni_at_a2150.c | 3 |
1 files changed, 2 insertions, 1 deletions
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; |