"The driver is in the mainline kernel as of 2.6.39. The hdspm driver is
now maintained by Adrian Knoth, adi(a)drcomp.erfurt.thur.de."
http://wiki.linuxproaudio.org/index.php/Driver:hdspm
So I guess for 2.6.33.9-rt31 I need to remove the driver, build current
alsa drivers and load the new driver.
"HDSPM driver
ALSA: [hdspm] Move static mapping arrays to .c
ALSA: hdspm - Add support for RME RayDAT and AIO"
http://www.alsa-project.org/main/index.php/Changes_v1.0.23_v1.0.24
http://www.alsa-project.org/main/index.php/Main_Page
-- Ralf