netdev - [RFC Patch net-next 4/9] net: dsa: microchip: move port memory allocation to ksz

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Date:   Wed, 11 May 2022 16:07:50 +0530
From:   Arun Ramadoss <arun.ramadoss@...rochip.com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
CC:     Russell King <linux@...linux.org.uk>,
        Woojung Huh <woojung.huh@...rochip.com>,
        <UNGLinuxDriver@...rochip.com>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Marek Vasut <marex@...x.de>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>
Subject: [RFC Patch net-next 4/9] net: dsa: microchip: move port memory allocation to ksz_common

ksz8795 and ksz9477 init function initializes the memory to dev->ports
and assigns the ds real number of ports. Since both the routines are
same, moved the allocation of port memory to ksz_switch_register after
init.

Signed-off-by: Arun Ramadoss <arun.ramadoss@...rochip.com>
---
 drivers/net/dsa/microchip/ksz8795.c    | 8 --------
 drivers/net/dsa/microchip/ksz9477.c    | 8 --------
 drivers/net/dsa/microchip/ksz_common.c | 9 +++++++++
 3 files changed, 9 insertions(+), 16 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index b6032b65afc2..91f29ff7256c 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -1599,11 +1599,6 @@ static int ksz8_switch_init(struct ksz_device *dev)
 
 	dev->reg_mib_cnt = MIB_COUNTER_NUM;
 
-	dev->ports = devm_kzalloc(dev->dev,
-				  dev->info->port_cnt * sizeof(struct ksz_port),
-				  GFP_KERNEL);
-	if (!dev->ports)
-		return -ENOMEM;
 	for (i = 0; i < dev->info->port_cnt; i++) {
 		mutex_init(&dev->ports[i].mib.cnt_mutex);
 		dev->ports[i].mib.counters =
@@ -1615,9 +1610,6 @@ static int ksz8_switch_init(struct ksz_device *dev)
 			return -ENOMEM;
 	}
 
-	/* set the real number of ports */
-	dev->ds->num_ports = dev->info->port_cnt;
-
 	/* We rely on software untagging on the CPU port, so that we
 	 * can support both tagged and untagged VLANs
 	 */
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index c712a0011367..1a0fd36e180e 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -1482,11 +1482,6 @@ static int ksz9477_switch_init(struct ksz_device *dev)
 	dev->reg_mib_cnt = SWITCH_COUNTER_NUM;
 	dev->mib_cnt = TOTAL_SWITCH_COUNTER_NUM;
 
-	dev->ports = devm_kzalloc(dev->dev,
-				  dev->info->port_cnt * sizeof(struct ksz_port),
-				  GFP_KERNEL);
-	if (!dev->ports)
-		return -ENOMEM;
 	for (i = 0; i < dev->info->port_cnt; i++) {
 		spin_lock_init(&dev->ports[i].mib.stats64_lock);
 		mutex_init(&dev->ports[i].mib.cnt_mutex);
@@ -1499,9 +1494,6 @@ static int ksz9477_switch_init(struct ksz_device *dev)
 			return -ENOMEM;
 	}
 
-	/* set the real number of ports */
-	dev->ds->num_ports = dev->info->port_cnt;
-
 	return 0;
 }
 
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 4b5c2df4ae18..59af4142cb6d 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -767,6 +767,15 @@ int ksz_switch_register(struct ksz_device *dev,
 	if (ret)
 		return ret;
 
+	dev->ports = devm_kzalloc(dev->dev,
+				  dev->info->port_cnt * sizeof(struct ksz_port),
+				  GFP_KERNEL);
+	if (!dev->ports)
+		return -ENOMEM;
+
+	/* set the real number of ports */
+	dev->ds->num_ports = dev->info->port_cnt;
+
 	/* Host port interface will be self detected, or specifically set in
 	 * device tree.
 	 */
-- 
2.33.0