[Intel-wired-lan] [PATCH iwl-net v1 3/3] ixgbe: use EOPNOTSUPP instead of ENOTSUPP in ixgbe_ptp_feature_enable()

[Kohei Enju]

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 <en...@amazon.com>
---
 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