eth: lan743x: reject extts for non-pci11x1x devices

Remove PTP_PF_EXTTS support for non-PCI11x1x devices since they do not support
the PTP-IO Input event triggered timestamping mechanisms added

Fixes: 60942c3 ("net: lan743x: Add support for PTP-IO Event Input External Timestamp (extts)")
Signed-off-by: Raju Lakkaraju <[email protected]>
Reviewed-by: Horatiu Vultur <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Raju Lakkaraju

drivers/net/ethernet/microchip/lan743x_ptp.c

@@ -1049,6 +1049,10 @@ static int lan743x_ptpci_verify_pin_config(struct ptp_clock_info *ptp,
 					   enum ptp_pin_function func,
 					   unsigned int chan)
 {
+	struct lan743x_ptp *lan_ptp =
+		container_of(ptp, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(lan_ptp, struct lan743x_adapter, ptp);
 	int result = 0;
 
 	/* Confirm the requested function is supported. Parameter
@@ -1057,7 +1061,10 @@ static int lan743x_ptpci_verify_pin_config(struct ptp_clock_info *ptp,
 	switch (func) {
 	case PTP_PF_NONE:
 	case PTP_PF_PEROUT:
+		break;
 	case PTP_PF_EXTTS:
+		if (!adapter->is_pci11x1x)
+			result = -1;
 		break;
 	case PTP_PF_PHYSYNC:
 	default: