linux-kernel - [PATCH net-next 3/6] net: ethernet: ti: am65-cpsw-nuss: fix ports mac sl initialization

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Message-ID: <20200626181709.22635-4-grygorii.strashko@ti.com>
Date:   Fri, 26 Jun 2020 21:17:06 +0300
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     "David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
        Jakub Kicinski <kuba@...nel.org>
CC:     Sekhar Nori <nsekhar@...com>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Murali Karicheri <m-karicheri2@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Jan Kiszka <jan.kiszka@...mens.com>,
        Grygorii Strashko <grygorii.strashko@...com>
Subject: [PATCH net-next 3/6] net: ethernet: ti: am65-cpsw-nuss: fix ports mac sl initialization

The MAC SL has to be initialized for each port otherwise
am65_cpsw_nuss_slave_disable_unused() will crash for disabled ports.

Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
Not critical as current driver supports one port only.

 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 89ea29a26c3a..7a921a480f29 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -1768,6 +1768,10 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
 				common->cpsw_base + AM65_CPSW_NU_FRAM_BASE +
 				(AM65_CPSW_NU_FRAM_PORT_OFFSET * (port_id - 1));
 
+		port->slave.mac_sl = cpsw_sl_get("am65", dev, port->port_base);
+		if (IS_ERR(port->slave.mac_sl))
+			return PTR_ERR(port->slave.mac_sl);
+
 		port->disabled = !of_device_is_available(port_np);
 		if (port->disabled)
 			continue;
@@ -1811,10 +1815,6 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
 			return ret;
 		}
 
-		port->slave.mac_sl = cpsw_sl_get("am65", dev, port->port_base);
-		if (IS_ERR(port->slave.mac_sl))
-			return PTR_ERR(port->slave.mac_sl);
-
 		mac_addr = of_get_mac_address(port_np);
 		if (!IS_ERR(mac_addr)) {
 			ether_addr_copy(port->slave.mac_addr, mac_addr);
-- 
2.17.1