| From 04b385f325080157ab1b5f8ce1b1de07ce0d9e27 Mon Sep 17 00:00:00 2001 |
| From: DENG Qingfang <dqfext@gmail.com> |
| Date: Thu, 18 Feb 2021 11:45:14 +0800 |
| Subject: net: ag71xx: remove unnecessary MTU reservation |
| |
| From: DENG Qingfang <dqfext@gmail.com> |
| |
| 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 <dqfext@gmail.com> |
| Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> |
| Link: https://lore.kernel.org/r/20210218034514.3421-1-dqfext@gmail.com |
| Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| drivers/net/ethernet/atheros/ag71xx.c | 4 +--- |
| 1 file changed, 1 insertion(+), 3 deletions(-) |
| |
| --- 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 ag71x |
| |
| 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) |
