On 2016/6/13 20:46, Leon Romanovsky wrote:
On Sun, Jun 12, 2016 at 05:41:06PM +0800, Wei Hu (Xavier) wrote:

On 2016/6/9 14:26, Leon Romanovsky wrote:
On Wed, Jun 01, 2016 at 11:37:53PM +0800, Lijun Ou wrote:
This patch registered IB device when loaded, and unregistered
IB device when removed.

Signed-off-by: Wei Hu <xavier.hu...@huawei.com>
Signed-off-by: Nenglong Zhao <zhaonengl...@hisilicon.com>
Signed-off-by: Lijun Ou <ouli...@huawei.com>
---
  drivers/infiniband/hw/hns/hns_roce_main.c | 46 +++++++++++++++++++++++++++++++
  1 file changed, 46 insertions(+)

diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c 
b/drivers/infiniband/hw/hns/hns_roce_main.c
index 7fb0d34..f179a7f 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -62,6 +62,41 @@
  #include "hns_roce_device.h"
  #include "hns_roce_icm.h"
+void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)
You are not calling to this function in this patch.

+{
+       ib_unregister_device(&hr_dev->ib_dev);
+}
+
+int hns_roce_register_device(struct hns_roce_dev *hr_dev)
This function should be static.

+{
+       int ret;
+       struct hns_roce_ib_iboe *iboe = NULL;
+       struct ib_device *ib_dev = NULL;
+       struct device *dev = &hr_dev->pdev->dev;
+
+       iboe = &hr_dev->iboe;
+
+       ib_dev = &hr_dev->ib_dev;
+       strlcpy(ib_dev->name, "hisi_%d", IB_DEVICE_NAME_MAX);
+
+       ib_dev->owner                        = THIS_MODULE;
+       ib_dev->node_type            = RDMA_NODE_IB_CA;
+       ib_dev->dma_device           = dev;
+
+       ib_dev->phys_port_cnt                = hr_dev->caps.num_ports;
+       ib_dev->local_dma_lkey               = hr_dev->caps.reserved_lkey;
+       ib_dev->num_comp_vectors     = hr_dev->caps.num_comp_vectors;
+       ib_dev->uverbs_abi_ver               = 1;
+
+       ret = ib_register_device(ib_dev, NULL);
+       if (ret) {
+               dev_err(dev, "ib_register_device failed!\n");
+               return ret;
+       }
+
+       return 0;
+}
+
  int hns_roce_get_cfg(struct hns_roce_dev *hr_dev)
  {
        int i;
@@ -363,6 +398,17 @@ static int hns_roce_probe(struct platform_device *pdev)
                goto error_failed_engine_init;
        }
+       ret = hns_roce_register_device(hr_dev);
+       if (ret) {
+               dev_err(dev, "register_device failed!\n");
According to the current code, you will print this error together with
error line in hns_roce_register_device for the same failure.

"ib_register_device failed!"
"register_device failed!"
Hi, leon
     In this patch [PATCH v9 11/22], there is only one error branch in
funtion named hns_roce_register_device.
     In the following patch [PATCH v9 13/22], we add more operation, there
are more
         than two error branch in this function as below.
Yes, and in all these error flows you already printed debug messages, your
"register_device failed" print is useless.
Hi, leon
    We have fixed it.
    And Oulijun have sent PATCH V10. Thanks

Regards
Wei Hu


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