RE: [PATCH] net: cpsw_new: unregister devlink on port registration failure

> -----Original Message-----
> From: Guangshuo Li <[email protected]>
> Sent: Wednesday, June 3, 2026 4:08 PM
> To: Siddharth Vadapalli <[email protected]>; Roger Quadros
> <[email protected]>; Andrew Lunn <[email protected]>; David S.
> Miller <[email protected]>; Eric Dumazet <[email protected]>;
> Jakub Kicinski <[email protected]>; Paolo Abeni <[email protected]>;
> Kevin Hao <[email protected]>; Alexander Sverdlin
> <[email protected]>; Loktionov, Aleksandr
> <[email protected]>; Daniel Zahka
> <[email protected]>; Guangshuo Li <[email protected]>;
> Ilias Apalodimas <[email protected]>; Murali Karicheri <m-
> [email protected]>; Grygorii Strashko <[email protected]>;
> [email protected]; [email protected]; linux-
> [email protected]
> Subject: [PATCH] net: cpsw_new: unregister devlink on port
> registration failure
> 
> cpsw_probe() registers devlink before registering the CPSW ports.
> 
> If cpsw_register_ports() fails, the error path only unregisters the
> notifiers and then releases the lower level resources. It does not
> undo the successful cpsw_register_devlink() call, leaving the devlink
> instance and its parameters registered after probe has failed.
> 
> Add a devlink cleanup label for the path where devlink registration
> has already succeeded, and use it when port registration fails.
> 
> Fixes: ed3525eda4c4 ("net: ethernet: ti: introduce cpsw switchdev
> based driver part 1 - dual-emac")
> Signed-off-by: Guangshuo Li <[email protected]>
> ---
>  drivers/net/ethernet/ti/cpsw_new.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/ti/cpsw_new.c
> b/drivers/net/ethernet/ti/cpsw_new.c
> index 7f42f58a4b03..95b3b58db6e0 100644
> --- a/drivers/net/ethernet/ti/cpsw_new.c
> +++ b/drivers/net/ethernet/ti/cpsw_new.c
> @@ -2050,7 +2050,7 @@ static int cpsw_probe(struct platform_device
> *pdev)
> 
>  	ret = cpsw_register_ports(cpsw);
>  	if (ret)
> -		goto clean_unregister_notifiers;
> +		goto clean_unregister_devlink;
> 
>  	dev_notice(dev, "initialized (regs %pa, pool size %d)
> hw_ver:%08X %d.%d (%d)\n",
>  		   &ss_res->start, descs_pool_size,
> @@ -2062,6 +2062,8 @@ static int cpsw_probe(struct platform_device
> *pdev)
> 
>  	return 0;
> 
> +clean_unregister_devlink:
> +	cpsw_unregister_devlink(cpsw);
>  clean_unregister_notifiers:
>  	cpsw_unregister_notifiers(cpsw);
>  clean_cpts:
> --
> 2.43.0

Reviewed-by: Aleksandr Loktionov <[email protected]>