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

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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>

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Alex Estrin 2017-07-24 07:46:36 -07:00 • committed by Doug Ledford

parent a618b7e40a

commit 5e2d6764a7

2 changed files with 16 additions and 1 deletions

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16

drivers/infiniband/hw/hfi1/chip.c

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1

drivers/infiniband/hw/hfi1/intr.c

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