1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 4007f721d25d..e711de400a01 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -627,6 +627,9 @@ int ib_modify_device(struct ib_device *device,
                      int device_modify_mask,
                      struct ib_device_modify *device_modify)
 {
+        if (!device->modify_device)
+                return -ENOSYS;
+
         return device->modify_device(device, device_modify_mask,
                                      device_modify);
 }
@@ -647,6 +650,9 @@ int ib_modify_port(struct ib_device *device,
                    u8 port_num, int port_modify_mask,
                    struct ib_port_modify *port_modify)
 {
+        if (!device->modify_port)
+                return -ENOSYS;
+
         if (port_num < start_port(device) || port_num > end_port(device))
                 return -EINVAL;