tree 320cfa734fabe64797f78669e7f63bfe1c3aaa6e
parent a618b7e40af2b2b751790d602ffa93800b594eca
author Alex Estrin <alex.estrin@intel.com> 1500907596 -0700
committer Doug Ledford <dledford@redhat.com> 1501528717 -0400

IB/hfi1: Verify port data VLs credits on transition to Armed

There is a window where the FM can read the buffer control table
and decide not to program buffers. When a port goes down, the code
clears the table and if it is not programmed, posted SDMA descriptors
will never complete due to no buffer credits.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Alex Estrin <alex.estrin@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>