qede: Adverstise software timestamp caps when PHC is not available.

[ Upstream commit 82a4e71b1565dea8387f54503e806cf374e779ec ]

When ptp clock is not available for a PF (e.g., higher PFs in NPAR mode),
get-tsinfo() callback should return the software timestamp capabilities
instead of returning the error.

Fixes: 4c55215c ("qede: Add driver support for PTP")
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/qlogic/qede/qede_ptp.c b/drivers/net/ethernet/qlogic/qede/qede_ptp.c
index 9b2280badaf77666ceab5cf0409f484ed08719b8..475f6ae5d4b396341caa959cb7475f03b2752750 100644 (file)
--- a/drivers/net/ethernet/qlogic/qede/qede_ptp.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ptp.c
@@ -337,8 +337,14 @@ int qede_ptp_get_ts_info(struct qede_dev *edev, struct ethtool_ts_info *info)
 {
        struct qede_ptp *ptp = edev->ptp;
 
-       if (!ptp)
-               return -EIO;
+       if (!ptp) {
+               info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
+                                       SOF_TIMESTAMPING_RX_SOFTWARE |
+                                       SOF_TIMESTAMPING_SOFTWARE;
+               info->phc_index = -1;
+
+               return 0;
+       }
 
        info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
                                SOF_TIMESTAMPING_RX_SOFTWARE |