[PATCH 5.9 435/757] RDMA/qedr: Fix doorbell setting

[Greg Kroah-Hartman]

From: Michal Kalderon <michal.kalderon@xxxxxxxxxxx>

[ Upstream commit 0b1eddc1964351cd5ce57aff46853ed4ce9ebbff ]

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@xxxxxxxxxxx
Signed-off-by: Michal Kalderon <michal.kalderon@xxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/infiniband/hw/qedr/verbs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index ae22bb8fe19b8..c61bdf97231f8 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -999,7 +999,7 @@ 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 */
-- 
2.25.1