diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2026-01-30 19:47:41 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 16:49:37 +0300 |
| commit | 2ddb4c5699129d8fc9ce8ae0855f47ca2c6b9509 (patch) | |
| tree | f1c74e74f4a73d82d5605c861a52376c1cff357d | |
| parent | b07802b8572601c01c6fc84e01c4af50b21da7f4 (diff) | |
| download | linux-2ddb4c5699129d8fc9ce8ae0855f47ca2c6b9509.tar.xz | |
comedi: das6402: Add sanity checks for I/O base address
The "das6402" driver uses an admin-supplied configuration option
(`it->options[0]`) to configure the I/O port base address of a supported
board in the DAS6402 family. It currently allows any base address to be
configured but the hardware only supports base addresses (configured by
an on-board DIP switch) 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/20260130170416.49994-17-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/comedi/drivers/das6402.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/comedi/drivers/das6402.c b/drivers/comedi/drivers/das6402.c index 7660487e563c..516a5d5a2840 100644 --- a/drivers/comedi/drivers/das6402.c +++ b/drivers/comedi/drivers/das6402.c @@ -560,7 +560,8 @@ static int das6402_attach(struct comedi_device *dev, if (!devpriv) return -ENOMEM; - 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; |