diff mbox series

[for-next,09/13] RDMA/hns: Add illegal hop_num judgement

Message ID 1532503781-45205-10-git-send-email-oulijun@huawei.com (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series Updates hns for v4.19 | expand

Commit Message

Lijun Ou July 25, 2018, 7:29 a.m. UTC 
When hop_num is more than three, it need to return -EINVAL.
This patch fixes it.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
---
 drivers/infiniband/hw/hns/hns_roce_hem.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/hns/hns_roce_hem.c b/drivers/infiniband/hw/hns/hns_roce_hem.c
index 63b5b3e..8dc336a 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hem.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hem.c
@@ -494,6 +494,9 @@  static int hns_roce_table_mhop_get(struct hns_roce_dev *hr_dev,
 			step_idx = 1;
 		} else if (hop_num == HNS_ROCE_HOP_NUM_0) {
 			step_idx = 0;
+		} else {
+			ret = -EINVAL;
+			goto err_dma_alloc_l1;
 		}
 
 		/* set HEM base address to hardware */