+doc: how to use kcomedilib
+
comedi_rt_timer segfaults when the lower-level driver disappears
and reappears. This is a problem with the Comedi core, not the
driver. I don't really know how to fix this.
standardize error codes
-verify PCI-6503 code
-
get rid of spurious "char-major-98-0 not found"
different error code for board error vs buffer overflow
move /proc/comedi to /proc/driver/comedi
+
+bug: buffer resize to 0 convinces comedi that buffer doesn't exist
+
- ao dma
- ai doesn't stop