> -----Original Message-----
> From: Intel-wired-lan <[email protected]> On Behalf
> Of Kohei Enju
> Sent: Monday, October 6, 2025 2:35 PM
> To: [email protected]; [email protected]
> Cc: Nguyen, Anthony L <[email protected]>; Kitszel,
> Przemyslaw <[email protected]>; Andrew Lunn
> <[email protected]>; David S. Miller <[email protected]>; Eric
> Dumazet <[email protected]>; Jakub Kicinski <[email protected]>; Paolo
> Abeni <[email protected]>; Auke Kok <[email protected]>; Jeff
> Garzik <[email protected]>; Sasha Neftin <[email protected]>;
> Richard Cochran <[email protected]>; Keller, Jacob E
> <[email protected]>; [email protected]; Kohei Enju
> <[email protected]>
> Subject: [Intel-wired-lan] [PATCH iwl-net v1 3/3] ixgbe: use
> EOPNOTSUPP instead of ENOTSUPP in ixgbe_ptp_feature_enable()
>
> When the requested PTP feature is not supported,
> ixgbe_ptp_feature_enable() returns -ENOTSUPP, causing userland
> programs to get "Unknown error 524".
>
> Since EOPNOTSUPP should be used when error is propagated to userland,
> return -EOPNOTSUPP instead of -ENOTSUPP.
>
> Fixes: 3a6a4edaa592 ("ixgbe: Hardware Timestamping + PTP Hardware
> Clock (PHC)")
> Signed-off-by: Kohei Enju <[email protected]>
> ---
> drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
> b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
> index 114dd88fc71c..6885d2343c48 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
> @@ -641,7 +641,7 @@ static int ixgbe_ptp_feature_enable(struct
> ptp_clock_info *ptp,
> * disabled
> */
> if (rq->type != PTP_CLK_REQ_PPS || !adapter->ptp_setup_sdp)
> - return -ENOTSUPP;
> + return -EOPNOTSUPP;
>
> if (on)
> adapter->flags2 |= IXGBE_FLAG2_PTP_PPS_ENABLED;
> --
> 2.48.1
Reviewed-by: Aleksandr Loktionov <[email protected]>
