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path: root/drivers/infiniband
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-rw-r--r--drivers/infiniband/hw/mlx4/qp.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 38e651a67589..b75efae7e449 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -1785,7 +1785,9 @@ int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr
struct mlx4_ib_qp *qp = to_mqp(ibqp);
struct mlx4_qp_context context;
int mlx4_state;
- int err;
+ int err = 0;
+
+ mutex_lock(&qp->mutex);
if (qp->state == IB_QPS_RESET) {
qp_attr->qp_state = IB_QPS_RESET;
@@ -1793,12 +1795,15 @@ int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr
}
err = mlx4_qp_query(dev->dev, &qp->mqp, &context);
- if (err)
- return -EINVAL;
+ if (err) {
+ err = -EINVAL;
+ goto out;
+ }
mlx4_state = be32_to_cpu(context.flags) >> 28;
- qp_attr->qp_state = to_ib_qp_state(mlx4_state);
+ qp->state = to_ib_qp_state(mlx4_state);
+ qp_attr->qp_state = qp->state;
qp_attr->path_mtu = context.mtu_msgmax >> 5;
qp_attr->path_mig_state =
to_ib_mig_state((be32_to_cpu(context.flags) >> 11) & 0x3);
@@ -1857,6 +1862,8 @@ done:
qp_init_attr->cap = qp_attr->cap;
- return 0;
+out:
+ mutex_unlock(&qp->mutex);
+ return err;
}