From: Lang Cheng chenglang@huawei.com
When posting a multi-descriptors command, the error code of previous failed descriptors may be rewrote to 0 by a later successful descriptor.
Fixes: a04ff739f2a9 ("RDMA/hns: Add command queue support for hip08 RoCE driver") Signed-off-by: Lang Cheng chenglang@huawei.com Signed-off-by: Weihang Li liweihang@huawei.com --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 260c17c..13f7897 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -1245,7 +1245,7 @@ static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev, u32 timeout = 0; int handle = 0; u16 desc_ret; - int ret = 0; + int ret; int ntc;
spin_lock_bh(&csq->lock); @@ -1283,15 +1283,14 @@ static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
if (hns_roce_cmq_csq_done(hr_dev)) { handle = 0; + ret = 0; while (handle < num) { /* get the result of hardware write back */ desc_to_use = &csq->desc[ntc]; desc[handle] = *desc_to_use; dev_dbg(hr_dev->dev, "Get cmq desc:\n"); desc_ret = le16_to_cpu(desc[handle].retval); - if (desc_ret == CMD_EXEC_SUCCESS) - ret = 0; - else + if (unlikely(desc_ret != CMD_EXEC_SUCCESS)) ret = -EIO;
ntc++;