hpsb_write

[<Ale...@ne...>]

I am writing a new piece of driver to go on top of OHCI.  I generate messages
and send them by calling hpsb_write().

My questions are:
1. The hpsb_write() function exists but no-one in the existing stack calls it.
Is there any reason for that?
2. Eventuallt hpsb_write() calls hpsb_send_packet() which hangs the kernel
before the two calls to down(), even though the semaphore is initialized.  This
is my major concern now and I will be happy if you have an idea why this
happens.
3. Are there any restrictions on using hpsb_write()?  Are there prerequisits one
has to fulfill before calling it?

Thank you,
Alex.