firewire: Generalize the iso transmit descriptor buffer logic.

The descriptor circular buffer logic used for iso transmission is
useful for async transmit too, so pull the sharable logic out in
a few standalone functions.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Kristian Høgsberg 2007-02-16 17:34:39 -05:00 committed by Stefan Richter
commit 30200739e6