netdev - [PATCH net-next 2/2] net: ti: icssg-prueth: Use system default workqueue in ndo_set_rx

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Message-Id: <20260204-icssg-prueth-workqueue-v1-2-9a892f4b293d@gmail.com>
Date: Wed, 04 Feb 2026 10:41:11 +0800
From: Kevin Hao <haokexin@...il.com>
To: netdev@...r.kernel.org
Cc: MD Danish Anwar <danishanwar@...com>, Roger Quadros <rogerq@...nel.org>, 
 Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Meghana Malladi <m-malladi@...com>, Jacob Keller <jacob.e.keller@...el.com>, 
 Vadim Fedorenko <vadim.fedorenko@...ux.dev>, 
 Himanshu Mittal <h-mittal1@...com>, Simon Horman <horms@...nel.org>, 
 Byungchul Park <byungchul@...com>, 
 Markus Elfring <elfring@...rs.sourceforge.net>, 
 Kevin Hao <haokexin@...il.com>
Subject: [PATCH net-next 2/2] net: ti: icssg-prueth: Use system default
 workqueue in ndo_set_rx_mode callback

Currently, the actual processing of ndo_set_rx_mode is executed in a work.
However, there is no need to create a dedicated workqueue for such a
simple use case. To simplify the code, switch to using the system default
workqueue instead.

Signed-off-by: Kevin Hao <haokexin@...il.com>
---
 drivers/net/ethernet/ti/icssg/icssg_common.c |  1 -
 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 13 ++++---------
 drivers/net/ethernet/ti/icssg/icssg_prueth.h |  1 -
 3 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_common.c b/drivers/net/ethernet/ti/icssg/icssg_common.c
index 090aa74d3ce7257ae52158b2ff9a2a1239bfcfc8..0cf9dfe0fa362b4ff986b6815952f95b79cb476d 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_common.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_common.c
@@ -1720,7 +1720,6 @@ void prueth_netdev_exit(struct prueth *prueth,
 	netif_napi_del(&emac->napi_rx);
 
 	pruss_release_mem_region(prueth->pruss, &emac->dram);
-	destroy_workqueue(emac->cmd_wq);
 	free_netdev(emac->ndev);
 	prueth->emac[mac] = NULL;
 }
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index f65041662173c1968f7e70dc4a3d897523f24095..0939994c932f5322eebbaa1b2fe43e20d3dca5ae 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -1099,7 +1099,7 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev)
 {
 	struct prueth_emac *emac = netdev_priv(ndev);
 
-	queue_work(emac->cmd_wq, &emac->rx_mode_work);
+	schedule_work(&emac->rx_mode_work);
 }
 
 static netdev_features_t emac_ndo_fix_features(struct net_device *ndev,
@@ -1451,11 +1451,6 @@ static int prueth_netdev_init(struct prueth *prueth,
 	emac->port_id = port;
 	emac->xdp_prog = NULL;
 	emac->ndev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
-	emac->cmd_wq = create_singlethread_workqueue("icssg_cmd_wq");
-	if (!emac->cmd_wq) {
-		ret = -ENOMEM;
-		goto free_ndev;
-	}
 	INIT_WORK(&emac->rx_mode_work, emac_ndo_set_rx_mode_work);
 
 	INIT_DELAYED_WORK(&emac->stats_work, icssg_stats_work_handler);
@@ -1467,7 +1462,7 @@ static int prueth_netdev_init(struct prueth *prueth,
 	if (ret) {
 		dev_err(prueth->dev, "unable to get DRAM: %d\n", ret);
 		ret = -ENOMEM;
-		goto free_wq;
+		goto free_ndev;
 	}
 
 	emac->tx_ch_num = 1;
@@ -1566,8 +1561,6 @@ static int prueth_netdev_init(struct prueth *prueth,
 
 free:
 	pruss_release_mem_region(prueth->pruss, &emac->dram);
-free_wq:
-	destroy_workqueue(emac->cmd_wq);
 free_ndev:
 	emac->ndev = NULL;
 	prueth->emac[mac] = NULL;
@@ -2236,6 +2229,7 @@ static int prueth_probe(struct platform_device *pdev)
 			prueth->emac[i]->ndev->phydev = NULL;
 		}
 		unregister_netdev(prueth->registered_netdevs[i]);
+		disable_work_sync(&prueth->emac[i]->rx_mode_work);
 	}
 
 netdev_exit:
@@ -2295,6 +2289,7 @@ static void prueth_remove(struct platform_device *pdev)
 		phy_disconnect(prueth->emac[i]->ndev->phydev);
 		prueth->emac[i]->ndev->phydev = NULL;
 		unregister_netdev(prueth->registered_netdevs[i]);
+		disable_work_sync(&prueth->emac[i]->rx_mode_work);
 	}
 
 	for (i = 0; i < PRUETH_NUM_MACS; i++) {
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index 10eadd35665045a98a0c0a639606b7c2691195de..3d94fa5a7ac10992d35fdb63458f8cb6eb3a5a22 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -236,7 +236,6 @@ struct prueth_emac {
 	/* Mutex to serialize access to firmware command interface */
 	struct mutex cmd_lock;
 	struct work_struct rx_mode_work;
-	struct workqueue_struct	*cmd_wq;
 
 	struct pruss_mem_region dram;
 

-- 
2.52.0