netdev - [PATCH net-next 3/4] net: dsa: b53: Improve flow control setup on BCM5301x

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Message-Id: <20210916120354.20338-4-zajec5@gmail.com>
Date:   Thu, 16 Sep 2021 14:03:53 +0200
From:   Rafał Miłecki <zajec5@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Rafał Miłecki <rafal@...ecki.pl>
Subject: [PATCH net-next 3/4] net: dsa: b53: Improve flow control setup on BCM5301x

From: Rafał Miłecki <rafal@...ecki.pl>

According to the Broadcom's reference driver flow control needs to be
enabled for any CPU switch port (5, 7 or 8 - depending on which one is
used). Current code makes it work only for the port 5. Use
dsa_is_cpu_port() which solved that problem.

Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
---
 drivers/net/dsa/b53/b53_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index ca84e32baca0..13f337a102ba 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1222,7 +1222,7 @@ static void b53_adjust_link(struct dsa_switch *ds, int port,
 		return;
 
 	/* Enable flow control on BCM5301x's CPU port */
-	if (is5301x(dev) && port == dev->cpu_port)
+	if (is5301x(dev) && dsa_is_cpu_port(ds, port))
 		tx_pause = rx_pause = true;
 
 	if (phydev->pause) {
-- 
2.26.2