From: Michal Kalderon michal.kalderon@marvell.com
[ 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@marvell.com Signed-off-by: Michal Kalderon michal.kalderon@marvell.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 c6165c6390a71..7de96ac4ce543 100644 --- a/drivers/infiniband/hw/qedr/verbs.c +++ b/drivers/infiniband/hw/qedr/verbs.c @@ -998,7 +998,7 @@ 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 */