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| /openbmc/linux/drivers/net/ethernet/qlogic/qed/ |
| H A D | qed_spq.c | 34c7bb47 Tue Jun 28 06:46:03 CDT 2016 Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com> 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>
34c7bb47 Tue Jun 28 06:46:03 CDT 2016 Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com> 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>
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