tree 8ca04fdbb5fa7ee021f95e5d7250eb79b6193d77
parent b560f03ddfb072bca65e9440ff0dc4f9b1d1f056
author Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com> 1467114363 -0400
committer David S. Miller <davem@davemloft.net> 1467202365 -0400

qed: Protect the doorbell BAR with the write barriers.

SPQ doorbell is currently protected with the compilation barrier. Under the
stress scenarios, we may get into a state where (due to the weak ordering)
several ramrod doorbells were written to the BAR with an out-of-order
producer values. Need to change the barrier type to a write barrier to make
sure that the write buffer is flushed after each doorbell.

Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>