From 46fb6512538d201d9a5b2bd7138b6751c37fdf0b Mon Sep 17 00:00:00 2001 From: Zhang Changzhong Date: Thu, 24 Nov 2022 11:03:08 +0800 Subject: [PATCH] net: ethernet: ti: am65-cpsw: fix error handling in am65_cpsw_nuss_probe() The am65_cpsw_nuss_cleanup_ndev() function calls unregister_netdev() even if register_netdev() fails, which triggers WARN_ON(1) in unregister_netdevice_many(). To fix it, make sure that unregister_netdev() is called only on registered netdev. Compile tested only. Fixes: 84b4aa493249 ("net: ethernet: ti: am65-cpsw: add multi port support in mac-only mode") Signed-off-by: Zhang Changzhong Reviewed-by: Maciej Fijalkowski Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index c50b137f92d7..d04a239c658e 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -2082,7 +2082,7 @@ static void am65_cpsw_nuss_cleanup_ndev(struct am65_cpsw_common *common) for (i = 0; i < common->port_num; i++) { port = &common->ports[i]; - if (port->ndev) + if (port->ndev && port->ndev->reg_state == NETREG_REGISTERED) unregister_netdev(port->ndev); } } -- 2.11.0