Hello.

The attached patch adds back the
compatibility code, allowing the
driver to work with older alsa-libs.
The removal was premature, it breaks
the real-life configs, I am sorry
about that.

Takashi, could you please apply?
It is a straight-forward revert of:
http://hg-mirror.alsa-project.org/alsa-kernel/diff/26b0243ab4fa/drivers/pcsp/pcsp_lib.c