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: a7efd7773e31 ("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: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index bf5fa8d..1da0131 100644 (file)
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -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 */