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authorLang Cheng <chenglang@huawei.com>2021-02-07 11:55:40 +0300
committerJason Gunthorpe <jgg@nvidia.com>2021-02-16 21:42:58 +0300
commit8f86e2eadac968200a6ab1d7074fc0f5cbc1e075 (patch)
tree10b866ce17da766dcda8d926261e005846a19dfd /drivers/infiniband
parent229557230c760e25b6af79709aa85d30de4c8500 (diff)
downloadlinux-8f86e2eadac968200a6ab1d7074fc0f5cbc1e075.tar.xz
RDMA/hns: Fixes missing error code of CMDQ
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") Link: https://lore.kernel.org/r/1612688143-28226-3-git-send-email-liweihang@huawei.com Signed-off-by: Lang Cheng <chenglang@huawei.com> Signed-off-by: Weihang Li <liweihang@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/hns/hns_roce_hw_v2.c7
1 files 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 4bbbc240e072..ba5272249dcd 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -1317,7 +1317,7 @@ 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);
@@ -1361,15 +1361,14 @@ 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++;