[PATCH 4.18 176/350] IB/mlx5: Allow transition of DCI QP to reset

[Greg Kroah-Hartman]

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Moni Shoua <monis@xxxxxxxxxxxx>

[ Upstream commit 99ed748e878a99c6c7b87bbec063eefd9e47cb42 ]

The transition is allowed from any state and the atrribute mask must be
IB_QP_STATE.

Fixes: c32a4f296e1d ("IB/mlx5: Add support for DC Initiator QP")
Signed-off-by: Moni Shoua <monis@xxxxxxxxxxxx>
Reviewed-by: Artemy Kovalyov <artemyko@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/infiniband/hw/mlx5/qp.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -3264,7 +3264,9 @@ static bool modify_dci_qp_is_ok(enum ib_
 	int req = IB_QP_STATE;
 	int opt = 0;
 
-	if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
+	if (new_state == IB_QPS_RESET) {
+		return is_valid_mask(attr_mask, req, opt);
+	} else if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
 		req |= IB_QP_PKEY_INDEX | IB_QP_PORT;
 		return is_valid_mask(attr_mask, req, opt);
 	} else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {