diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2026-01-30 19:48:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 16:49:40 +0300 |
| commit | e2b311504acd03b5e720c763fcd41ccd928de3b3 (patch) | |
| tree | 111f58e7403d4682a13df43d83a4e122813e6619 | |
| parent | 3d4ab5484aa249f4950eba7f697cff6b3f024c7c (diff) | |
| download | linux-e2b311504acd03b5e720c763fcd41ccd928de3b3.tar.xz | |
comedi: rti800: Add sanity checks for I/O base address
The "rti800" driver uses an admin-supplied configuration option
(`it->options[0]`) to configure the I/O port base address of a RTI-800
or RTI-815 board. It currently allows any base address to be configured
but the hardware only supports base addresses (configured by on-board
DIP switches) 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 <abbotti@mev.co.uk>
Link: https://patch.msgid.link/20260130170416.49994-45-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/comedi/drivers/rti800.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/comedi/drivers/rti800.c b/drivers/comedi/drivers/rti800.c index 1b02e47bdb4c..fa3965cf92f2 100644 --- a/drivers/comedi/drivers/rti800.c +++ b/drivers/comedi/drivers/rti800.c @@ -257,7 +257,8 @@ static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it) struct comedi_subdevice *s; int ret; - ret = comedi_request_region(dev, it->options[0], 0x10); + ret = comedi_check_request_region(dev, it->options[0], 0x10, + 0, 0x3ff, 16); if (ret) return ret; |