hyperv: Add an error message to rndis_filter_set_device_mac()

This message indicates an error returned from the host when changing MAC address.

Reported-by: Michal Kubecek <mkubecek@suse.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 7fdeb528133d..2b657d4d63a8 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -605,8 +605,11 @@ int rndis_filter_set_device_mac(struct hv_device *hdev, char *mac)
                 return -EBUSY;
         } else {
                 set_complete = &request->response_msg.msg.set_complete;
-                if (set_complete->status != RNDIS_STATUS_SUCCESS)
+                if (set_complete->status != RNDIS_STATUS_SUCCESS) {
+                        netdev_err(ndev, "Fail to set MAC on host side:0x%x\n",
+                                   set_complete->status);
                         ret = -EINVAL;
+                }
         }
 
 cleanup: