diff options
| -rw-r--r-- | drivers/comedi/drivers/pcmda12.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/comedi/drivers/pcmda12.c b/drivers/comedi/drivers/pcmda12.c index 611f13bedca0..6efd1ae6271a 100644 --- a/drivers/comedi/drivers/pcmda12.c +++ b/drivers/comedi/drivers/pcmda12.c @@ -120,7 +120,14 @@ static int pcmda12_attach(struct comedi_device *dev, struct comedi_subdevice *s; int ret; - ret = comedi_request_region(dev, it->options[0], 0x10); + /* + * The datasheet says it requires 16 contiguous addresses and is + * "configurable on any even sixteen port boundary". So require + * a 32-byte boundary and assume it uses 10-bit addresses like + * similar boards. + */ + ret = comedi_check_request_region(dev, it->options[0], 0x10, + 0, 0x3ff, 32); if (ret) return ret; |