[PATCH net] pds_core: reject component parameter in legacy firmware update

["Nikhil P. Rao" <nikhil.rao@amd.com>]

The legacy firmware update path does not support per-component updates.
If a user specifies a component parameter with devlink flash, reject
the request with -EOPNOTSUPP rather than silently ignoring the component
parameter and flashing the entire firmware image.

Fixes: 49ce92fbee0b ("pds_core: add FW update feature to devlink")
Signed-off-by: Nikhil P. Rao <nikhil.rao@amd.com>
---
 drivers/net/ethernet/amd/pds_core/devlink.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/amd/pds_core/devlink.c b/drivers/net/ethernet/amd/pds_core/devlink.c
index 2ea97e1c5939..8adae7b18898 100644
--- a/drivers/net/ethernet/amd/pds_core/devlink.c
+++ b/drivers/net/ethernet/amd/pds_core/devlink.c
@@ -90,6 +90,12 @@ int pdsc_dl_flash_update(struct devlink *dl,
 {
 	struct pdsc *pdsc = devlink_priv(dl);
 
+	if (params->component) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Component update not supported by this device");
+		return -EOPNOTSUPP;
+	}
+
 	return pdsc_firmware_update(pdsc, params->fw, extack);
 }
 
-- 
2.43.0