Commit 0b1eddc1 authored by Michal Kalderon's avatar Michal Kalderon Committed by Jason Gunthorpe
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RDMA/qedr: Fix doorbell setting 

Change the doorbell setting so that the maximum value between the last and
current value is set. This is to avoid doorbells being lost.

Fixes: a7efd777 ("qedr: Add support for PD,PKEY and CQ verbs")
Link: https://lore.kernel.org/r/20200902165741.8355-3-michal.kalderon@marvell.com


Signed-off-by: default avatarMichal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent 098e345a

drivers/infiniband/hw/qedr/verbs.c

+1 −1
Original line number Diff line number Diff line
@@ -989,7 +989,7 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 
		/* Generate doorbell address. */

		cq->db.data.icid = cq->icid;

		cq->db_addr = dev->db_addr + db_offset;

		cq->db.data.params = DB_AGG_CMD_SET <<

		cq->db.data.params = DB_AGG_CMD_MAX <<

		    RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT;



		/* point to the very last element, passing it we will toggle */