linux-kernel - [PATCH net 04/13] net: stmmac: dwmac-sun8i: Don't modify chain-mode module parameter

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Date:   Tue, 14 Mar 2023 01:42:28 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        LABBE Corentin <clabbe.montjoie@...il.com>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Christian Marangi <ansuelsmth@...il.com>,
        Biao Huang <biao.huang@...iatek.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        <netdev@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH net 04/13] net: stmmac: dwmac-sun8i: Don't modify chain-mode module parameter

Doing so activates the chain-mode for any DW MAC-based NIC on the platform
no matter with what parameter the module is loaded. Even if there is no
any other network controller on the SoC it is logically incorrect.

Fixes: 9f93ac8d4085 ("net-next: stmmac: Add dwmac-sun8i")
Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 8f543c3ab5c5..2ed63acaee5b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -6806,8 +6806,9 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
 
 	/* dwmac-sun8i only work in chain mode */
 	if (priv->plat->has_sun8i)
-		chain_mode = 1;
-	priv->chain_mode = chain_mode;
+		priv->chain_mode = 1;
+	else
+		priv->chain_mode = chain_mode;
 
 	/* Initialize HW Interface */
 	ret = stmmac_hwif_init(priv);
-- 
2.39.2