Hi,
Thanks for the explanation.
I'm not totally sure how this old HCA FW handles a state where modules are shutdown from pm-suspend.
I would start with going to reboot this server and going to step 1. making sure that I have the latest OFED for your Debian OS and FW before attempting to do these kind of tests.
if you can list exactly what you have we may be able to locate the necessary drivers (although they're antics)