There is no need to retry module unload for rdma_rxe
and siw. This also creates a dependency on
tests/nvmeof/rc which prevents it from using in
other test subsystems.
If it wouldn't be necessary to retry module unload I wouldn't have
introduced a loop.
I thought it was to work-around a driver issue as these drivers
traditionally had plenty of stability issues.
To be honest this retry loop to me indicated that either the
driver has a bug or the test. But maybe there is a need I
am not seeing.
That loop was introduced a long time ago. I haven't tried to root-cause
it but my guess is that the loop is necessary because the module refcount
only drops to zero a short time after the first attempt to unload these
kernel modules.
Didn't see any of that in the nvme testing...
