diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2026-01-30 19:47:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 16:49:39 +0300 |
| commit | 2555cab1cb79fe41fadca2eaf6674fddaf5f1404 (patch) | |
| tree | b237627447f01a0aae2d4c6a9f98408e8f80203e | |
| parent | df05bcfcbd32669dfa7e3d4a3d0f0b46ded5e61a (diff) | |
| download | linux-2555cab1cb79fe41fadca2eaf6674fddaf5f1404.tar.xz | |
comedi: ni_labpc: Add sanity checks for I/O base address
The "ni_labpc" driver uses an admin-supplied configuration option
(`it->options[0]`) to configure the I/O port base address of a
Lab-PC-1200 series or Lab-PC+ board. It currently allows any base
address to be configured but the hardware only supports base addresses
(configured by a configuration utility and stored in nonvolatile memory)
in the range 0 to 0x3E0 on 32-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/20260130170416.49994-32-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/comedi/drivers/ni_labpc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/comedi/drivers/ni_labpc.c b/drivers/comedi/drivers/ni_labpc.c index b25a8e117072..93b5333a99b5 100644 --- a/drivers/comedi/drivers/ni_labpc.c +++ b/drivers/comedi/drivers/ni_labpc.c @@ -78,7 +78,8 @@ static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it) unsigned int dma_chan = it->options[2]; int ret; - ret = comedi_request_region(dev, it->options[0], 0x20); + ret = comedi_check_request_region(dev, it->options[0], 0x20, + 0, 0x3ff, 32); if (ret) return ret; |