linux-kernel - [PATCH net-next v2 15/21] net: dsa: mv88e6131: drop VLAN Ethertype setup

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Date:	Mon,  9 May 2016 13:22:52 -0400
From:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Andrew Lunn <andrew@...n.ch>,
	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [PATCH net-next v2 15/21] net: dsa: mv88e6131: drop VLAN Ethertype setup

The 6131 switch models have a Core Tag Type register. Their setup code
is setting it to 0x8100, which is the reset default.

Drop this specific part which is correctly configured on reset anyway.

Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
---
 drivers/net/dsa/mv88e6131.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/net/dsa/mv88e6131.c b/drivers/net/dsa/mv88e6131.c
index d05fc79..1c3b245 100644
--- a/drivers/net/dsa/mv88e6131.c
+++ b/drivers/net/dsa/mv88e6131.c
@@ -65,11 +65,6 @@ static int mv88e6131_setup_global(struct dsa_switch *ds)
 	int ret;
 	u32 reg;
 
-	/* Set the VLAN ethertype to 0x8100. */
-	ret = mv88e6xxx_reg_write(ps, REG_GLOBAL, GLOBAL_CORE_TAG_TYPE, 0x8100);
-	if (ret)
-		return ret;
-
 	/* Disable ARP mirroring, and configure the upstream port as
 	 * the port to which ingress and egress monitor frames are to
 	 * be sent.
-- 
2.8.2