From 0a7f9a364bebd5f6b28ca3e8d2f71f399c9ae6e0 Mon Sep 17 00:00:00 2001 From: DENG Qingfang Date: Thu, 18 Feb 2021 11:45:14 +0800 Subject: [PATCH] net: ag71xx: remove unnecessary MTU reservation commit 04b385f325080157ab1b5f8ce1b1de07ce0d9e27 upstream. 2 bytes of the MTU are reserved for Atheros DSA tag, but DSA core has already handled that since commit dc0fe7d47f9f. Remove the unnecessary reservation. Fixes: d51b6ce441d3 ("net: ethernet: add ag71xx driver") Signed-off-by: DENG Qingfang Reviewed-by: Oleksij Rempel Link: https://lore.kernel.org/r/20210218034514.3421-1-dqfext@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/atheros/ag71xx.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/net/ethernet/atheros/ag71xx.c b/drivers/net/ethernet/atheros/ag71xx.c index dd5c8a9038bb7..a60ce90305819 100644 --- a/drivers/net/ethernet/atheros/ag71xx.c +++ b/drivers/net/ethernet/atheros/ag71xx.c @@ -223,8 +223,6 @@ #define AG71XX_REG_RX_SM 0x01b0 #define AG71XX_REG_TX_SM 0x01b4 -#define ETH_SWITCH_HEADER_LEN 2 - #define AG71XX_DEFAULT_MSG_ENABLE \ (NETIF_MSG_DRV \ | NETIF_MSG_PROBE \ @@ -933,7 +931,7 @@ static void ag71xx_hw_setup(struct ag71xx *ag) static unsigned int ag71xx_max_frame_len(unsigned int mtu) { - return ETH_SWITCH_HEADER_LEN + ETH_HLEN + VLAN_HLEN + mtu + ETH_FCS_LEN; + return ETH_HLEN + VLAN_HLEN + mtu + ETH_FCS_LEN; } static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)