diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2026-01-30 19:48:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 16:49:40 +0300 |
| commit | 63c1983136d784d95054accd31d03006f518e71f (patch) | |
| tree | ab161ffe058fd6d488f85693f0217af4cd2df791 | |
| parent | e2b311504acd03b5e720c763fcd41ccd928de3b3 (diff) | |
| download | linux-63c1983136d784d95054accd31d03006f518e71f.tar.xz | |
comedi: rti802: 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-802
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 0x3FC on 4-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/20260130170416.49994-46-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/comedi/drivers/rti802.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/comedi/drivers/rti802.c b/drivers/comedi/drivers/rti802.c index d66762a22258..af990881c27a 100644 --- a/drivers/comedi/drivers/rti802.c +++ b/drivers/comedi/drivers/rti802.c @@ -72,7 +72,8 @@ static int rti802_attach(struct comedi_device *dev, struct comedi_devconfig *it) int i; int ret; - ret = comedi_request_region(dev, it->options[0], 0x04); + ret = comedi_check_request_region(dev, it->options[0], 0x04, + 0, 0x3ff, 4); if (ret) return ret; |