mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-16 07:51:31 -04:00
Code Issues Packages Projects Releases Wiki Activity

comedi: rti800: Add sanity checks for I/O base address

Browse Source 
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>
This commit is contained in:
Ian Abbott
2026-01-30 16:48:09 +00:00
committed by Greg Kroah-Hartman
parent 3d4ab5484a
commit e2b311504a
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/comedi/drivers/rti800.c
View File

@@ -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;