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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: a7efd7773e ("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>
This commit is contained in:
Michal Kalderon 2020-09-02 19:57:35 +03:00 committed by Jason Gunthorpe
parent 098e345a1a
commit 0b1eddc196
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/qedr/verbs.c
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@ -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 */