[PATCH for-next v3 1/4] RDMA/core: Fix return code when modify_port isn't supported

[Kamal Heib <kamalheib1@gmail.com>]

Improving return code from ib_modify_port() by doing the following:
1- Use "-EOPNOTSUPP" instead "-ENOSYS" which is the proper return code.
2- Avoid confusion by return "-EOPNOTSUPP" when modify_port() isn't
   supplied by the provider and the protocol is IB, otherwise return
   success to avoid failure of the ib_modify_port() in CM layer.

Fixes: 61e0962d5221 ("IB: Avoid ib_modify_port() failure for RoCE devices")
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
---
 drivers/infiniband/core/device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index a667636f74bf..626ac18dd3a7 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -2397,7 +2397,7 @@ int ib_modify_port(struct ib_device *device,
 					     port_modify_mask,
 					     port_modify);
 	else
-		rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS;
+		rc = rdma_protocol_ib(device, port_num) ? -EOPNOTSUPP : 0;
 	return rc;
 }
 EXPORT_SYMBOL(ib_modify_port);
-- 
2.20.1