sfc: nicer log message on PTP probe fail

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index a2e9aee05cdde8dc5af6528101862868abe00075..8c5c96acecc92be9e9c853e71ba7d60b0e52144a 100644 (file)
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -604,7 +604,12 @@ static int efx_ptp_disable(struct efx_nic *efx)
        rc = efx_mcdi_rpc_quiet(efx, MC_CMD_PTP, inbuf, sizeof(inbuf),
                                outbuf, sizeof(outbuf), NULL);
        rc = (rc == -EALREADY) ? 0 : rc;
-       if (rc)
+       /* If we get ENOSYS, the NIC doesn't support PTP, and thus this function
+        * should only have been called during probe.
+        */
+       if (rc == -ENOSYS || rc == -EPERM)
+               netif_info(efx, probe, efx->net_dev, "no PTP support\n");
+       else if (rc)
                efx_mcdi_display_error(efx, MC_CMD_PTP,
                                       MC_CMD_PTP_IN_DISABLE_LEN,
                                       outbuf, sizeof(outbuf), rc);