1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c
index 7a5b0e676cc7..c702a009608f 100644
--- a/drivers/infiniband/hw/hfi1/file_ops.c
+++ b/drivers/infiniband/hw/hfi1/file_ops.c
@@ -203,6 +203,9 @@ static long hfi1_file_ioctl(struct file *fp, unsigned int cmd,
 
         switch (cmd) {
         case HFI1_IOCTL_ASSIGN_CTXT:
+                if (uctxt)
+                        return -EINVAL;
+
                 if (copy_from_user(&uinfo,
                                    (struct hfi1_user_info __user *)arg,
                                    sizeof(uinfo)))