This is a note to let you know that I've just added the patch titled
RDMA/qedr: Fix doorbell setting
to the 5.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-qedr-fix-doorbell-setting.patch
and it can be found in the queue-5.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 15412817c34f9000f440c49774efa96deb85d69e
Author: Michal Kalderon <michal.kalderon@xxxxxxxxxxx>
Date: Wed Sep 2 19:57:35 2020 +0300
RDMA/qedr: Fix doorbell setting
[ 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>
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 */
