diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2026-01-30 16:47:33 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 15:49:37 +0200 |
| commit | 052b102e2d0b188f5d87699b6f89da8c77bb7f20 (patch) | |
| tree | 464672c07a578330e5efa58ee05f593e6bb1c2f3 /drivers | |
| parent | c1eedf0a0fb1d53eba8f92fc8ac3c96de6f9c97e (diff) | |
comedi: amplc_pc263: Add sanity checks for I/O base address
The "amplc_pc263" driver uses an admin-supplied configuration option
(`it->options[0]`) to configure the I/O port base address of a supported
PC263 board. It currently allows any base address to be configured but
the hardware only supports base addresses (set by on-board DIP switches)
in the range 0 to 0x7FE on 2-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/20260130170416.49994-9-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/comedi/drivers/amplc_pc263.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/comedi/drivers/amplc_pc263.c b/drivers/comedi/drivers/amplc_pc263.c index d7f088a8a5e3..e2196dc9d426 100644 --- a/drivers/comedi/drivers/amplc_pc263.c +++ b/drivers/comedi/drivers/amplc_pc263.c @@ -61,7 +61,8 @@ static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it) struct comedi_subdevice *s; int ret; - ret = comedi_request_region(dev, it->options[0], 0x2); + ret = comedi_check_request_region(dev, it->options[0], 0x2, + 0, 0x7ff, 2); if (ret) return ret; |