netdev - [PATCH] net: ethernet: ti: am65-cpsw: Fix devlink port register sequence

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Date:   Thu, 23 Jun 2022 10:13:37 +0530
From:   Siddharth Vadapalli <s-vadapalli@...com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <linux@...linux.org.uk>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kishon@...com>, <vigneshr@...com>, <grygorii.strashko@...com>,
        <s-vadapalli@...com>
Subject: [PATCH] net: ethernet: ti: am65-cpsw: Fix devlink port register sequence

Renaming interfaces using udevd depends on the interface being registered
before its netdev is registered. Otherwise, udevd reads an empty
phys_port_name value, resulting in the interface not being renamed.

Fix this by registering the interface before registering its netdev
by invoking am65_cpsw_nuss_register_devlink() before invoking
register_netdev() for the interface.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---
 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index fb92d4c1547d..47a6c4e5360b 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -2527,6 +2527,10 @@ static int am65_cpsw_nuss_register_ndevs(struct am65_cpsw_common *common)
 		return ret;
 	}
 
+	ret = am65_cpsw_nuss_register_devlink(common);
+	if (ret)
+		goto err_cleanup_ndev;
+
 	for (i = 0; i < common->port_num; i++) {
 		port = &common->ports[i];
 
@@ -2545,17 +2549,12 @@ static int am65_cpsw_nuss_register_ndevs(struct am65_cpsw_common *common)
 	if (ret)
 		goto err_cleanup_ndev;
 
-	ret = am65_cpsw_nuss_register_devlink(common);
-	if (ret)
-		goto clean_unregister_notifiers;
-
 	/* can't auto unregister ndev using devm_add_action() due to
 	 * devres release sequence in DD core for DMA
 	 */
 
 	return 0;
-clean_unregister_notifiers:
-	am65_cpsw_unregister_notifiers(common);
+
 err_cleanup_ndev:
 	am65_cpsw_nuss_cleanup_ndev(common);
 
-- 
2.36.1