[PATCH net-next v2 7/9] net: sparx5: move PTP IRQ handling out of sparx5_start()

[Daniel Machon]

Move the PTP IRQ request into sparx5_ptp_init() so all PTP setup is
done in one place.

Also move the sparx5_ptp_init() call to right before
sparx5_register_netdevs() and add a cleanup_ptp label. Update remove()
to disable the PTP IRQ and reorder ptp_deinit accordingly.

Signed-off-by: Daniel Machon <daniel.machon at microchip.com>
---
 .../net/ethernet/microchip/sparx5/sparx5_main.c    | 34 +++++++---------------
 drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c | 18 ++++++++++++
 2 files changed, 29 insertions(+), 23 deletions(-)

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
index d37f34197e84..f359008d2205 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
@@ -761,18 +761,6 @@ static int sparx5_start(struct sparx5 *sparx5)
 		sparx5->xtr_irq = -ENXIO;
 	}
 
-	if (sparx5->ptp_irq >= 0 &&
-	    sparx5_has_feature(sparx5, SPX5_FEATURE_PTP)) {
-		err = devm_request_threaded_irq(sparx5->dev, sparx5->ptp_irq,
-						NULL, ops->ptp_irq_handler,
-						IRQF_ONESHOT, "sparx5-ptp",
-						sparx5);
-		if (err)
-			sparx5->ptp_irq = -ENXIO;
-
-		sparx5->ptp = 1;
-	}
-
 	return err;
 }
 
@@ -957,16 +945,10 @@ static int mchp_sparx5_probe(struct platform_device *pdev)
 		goto cleanup_ports;
 	}
 
-	err = sparx5_ptp_init(sparx5);
-	if (err) {
-		dev_err(sparx5->dev, "PTP failed\n");
-		goto cleanup_ports;
-	}
-
 	err = sparx5_vcap_init(sparx5);
 	if (err) {
 		dev_err(sparx5->dev, "Failed to initialize VCAP\n");
-		goto cleanup_ptp;
+		goto cleanup_ports;
 	}
 
 	err = sparx5_mact_init(sparx5);
@@ -983,10 +965,16 @@ static int mchp_sparx5_probe(struct platform_device *pdev)
 
 	INIT_LIST_HEAD(&sparx5->mall_entries);
 
+	err = sparx5_ptp_init(sparx5);
+	if (err) {
+		dev_err(sparx5->dev, "Failed to initialize PTP\n");
+		goto cleanup_stats;
+	}
+
 	err = sparx5_register_netdevs(sparx5);
 	if (err) {
 		dev_err(sparx5->dev, "Failed to register net devices\n");
-		goto cleanup_stats;
+		goto cleanup_ptp;
 	}
 
 	err = sparx5_register_notifier_blocks(sparx5);
@@ -999,14 +987,14 @@ static int mchp_sparx5_probe(struct platform_device *pdev)
 
 cleanup_netdevs:
 	sparx5_unregister_netdevs(sparx5);
+cleanup_ptp:
+	sparx5_ptp_deinit(sparx5);
 cleanup_stats:
 	sparx5_stats_deinit(sparx5);
 cleanup_mact:
 	sparx5_mact_deinit(sparx5);
 cleanup_vcap:
 	sparx5_vcap_deinit(sparx5);
-cleanup_ptp:
-	sparx5_ptp_deinit(sparx5);
 cleanup_ports:
 	sparx5_destroy_netdevs(sparx5);
 cleanup_config:
@@ -1032,10 +1020,10 @@ static void mchp_sparx5_remove(struct platform_device *pdev)
 	}
 	sparx5_unregister_notifier_blocks(sparx5);
 	sparx5_unregister_netdevs(sparx5);
+	sparx5_ptp_deinit(sparx5);
 	sparx5_stats_deinit(sparx5);
 	sparx5_mact_deinit(sparx5);
 	sparx5_vcap_deinit(sparx5);
-	sparx5_ptp_deinit(sparx5);
 	ops->fdma_deinit(sparx5);
 	sparx5_destroy_netdevs(sparx5);
 }
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c b/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c
index 8b2e07821a95..a16ec8136d6d 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c
@@ -606,9 +606,22 @@ static int sparx5_ptp_phc_init(struct sparx5 *sparx5,
 int sparx5_ptp_init(struct sparx5 *sparx5)
 {
 	u64 tod_adj = sparx5_ptp_get_nominal_value(sparx5);
+	const struct sparx5_ops *ops = sparx5->data->ops;
 	struct sparx5_port *port;
 	int err, i;
 
+	if (sparx5->ptp_irq >= 0 &&
+	    sparx5_has_feature(sparx5, SPX5_FEATURE_PTP)) {
+		err = devm_request_threaded_irq(sparx5->dev, sparx5->ptp_irq,
+						NULL, ops->ptp_irq_handler,
+						IRQF_ONESHOT, "sparx5-ptp",
+						sparx5);
+		if (err)
+			sparx5->ptp_irq = -ENXIO;
+
+		sparx5->ptp = 1;
+	}
+
 	if (!sparx5->ptp)
 		return 0;
 
@@ -660,6 +673,11 @@ void sparx5_ptp_deinit(struct sparx5 *sparx5)
 	struct sparx5_port *port;
 	int i;
 
+	if (sparx5->ptp_irq >= 0) {
+		disable_irq(sparx5->ptp_irq);
+		sparx5->ptp_irq = -ENXIO;
+	}
+
 	for (i = 0; i < sparx5->data->consts->n_ports; i++) {
 		port = sparx5->ports[i];
 		if (!port)

-- 
2.34.1