IB/hfi1: Add QSFP sanity pre-check

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Sometimes a QSFP device does not respond in the expected time
after a power-on.  Add a read pre-check/retry when starting
the link on driver load.

Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

...

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Dean Luick 2016-08-31 07:24:33 -07:00 • committed by Doug Ledford

parent af53493916

commit 673b975f1f

4 changed files with 82 additions and 8 deletions

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86

drivers/infiniband/hw/hfi1/chip.c

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1

drivers/infiniband/hw/hfi1/chip.h

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2

drivers/infiniband/hw/hfi1/hfi.h

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1

drivers/infiniband/hw/hfi1/init.c

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