From: Leon Romanovsky <leonro@mellanox.com>
Date: Wed, 21 Feb 2018 18:12:35 +0200
Subject: RDMA/uverbs: Return not supported error code for unsupported commands
Patch-mainline: v4.17-rc1
Git-commit: a9ed5b38aad704bbc250f9df2e9a29ee54388829
References: bsc#1103992 FATE#326009

Command that doesn't exist means that it is not supported,
so update code to return -EOPNOTSUPP in case of failure.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/core/uverbs_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -714,7 +714,7 @@ static ssize_t ib_uverbs_write(struct fi
 	}
 
 	if (!verify_command_idx(command, extended_command)) {
-		ret = -EINVAL;
+		ret = -EOPNOTSUPP;
 		goto out;
 	}