From: Kamal Heib <kamalheib1@gmail.com>
Date: Mon, 23 Sep 2019 13:41:56 +0300
Subject: RDMA/core: Fix return code when modify_device isn't supported
Patch-mainline: v5.5-rc1
Git-commit: d0f3ef36bf49bbc7de04da0d7f65ef95749b8b30
References: jsc#SLE-8449

The proper return code is "-EOPNOTSUPP" when modify_device callback is not
supported.

Link: https://lore.kernel.org/r/20190923104158.5331-2-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/core/device.c |    2 +-
 drivers/infiniband/core/sysfs.c  |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -2366,7 +2366,7 @@ int ib_modify_device(struct ib_device *d
 		     struct ib_device_modify *device_modify)
 {
 	if (!device->ops.modify_device)
-		return -ENOSYS;
+		return -EOPNOTSUPP;
 
 	return device->ops.modify_device(device, device_modify_mask,
 					 device_modify);
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -1268,7 +1268,7 @@ static ssize_t node_desc_store(struct de
 	int ret;
 
 	if (!dev->ops.modify_device)
-		return -EIO;
+		return -EOPNOTSUPP;
 
 	memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));
 	ret = ib_modify_device(dev, IB_DEVICE_MODIFY_NODE_DESC, &desc);