FAILED: patch "[PATCH] net/mlx5: Set devlink reload feature bit for supported" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 96869f193cfd26c2b47db32e4d8bcad50461df7a Mon Sep 17 00:00:00 2001
From: Leon Romanovsky <[email protected]>
Date: Tue, 12 Oct 2021 16:15:25 +0300
Subject: [PATCH] net/mlx5: Set devlink reload feature bit for supported
devices only

Mulitport slave device doesn't support devlink reload, so instead of complicating initialization flow with devlink_reload_enable() which will be removed in next patch, don't set DEVLINK_F_RELOAD feature bit for such devices.

This fixes an error when reload counters exposed (and equal zero) for the mode that is not supported at all.

index fa98b7b95990..a85341a41cd0 100644
@@ -796,6 +796,7 @@ static void mlx5_devlink_traps_unregister(struct devlink *devlink)
 
 int mlx5_devlink_register(struct devlink *devlink)
 {
+	struct mlx5_core_dev *dev = devlink_priv(devlink);
 	int err;
 
 	err = devlink_params_register(devlink, mlx5_devlink_params,

@@ -813,7 +814,9 @@ int mlx5_devlink_register(struct devlink *devlink)
 	if (err)
 		goto traps_reg_err;
 
-	devlink_set_features(devlink, DEVLINK_F_RELOAD);
+	if (!mlx5_core_is_mp_slave(dev))
+		devlink_set_features(devlink, DEVLINK_F_RELOAD);
+
 	return 0;
 
 traps_reg_err: