Petr Štetiar c8f8e59816 ramips: gsw_mt7621: disable PORT 5 MAC RX/TX flow control by default ... Looking at the current upstream driver implementation, it seems like the TX/RX flow control is enabled only if the flow control pause option is resolved from the device/link partner advertisements (or otherwise set). On the other hand, our current in-tree driver force enables TX/RX flow control by default, thus possibly leading to TX timeouts if the other end sends pause frames (which are not properly handled?): WARNING: CPU: 3 PID: 0 at net/sched/sch_generic.c:320 dev_watchdog+0x1ac/0x324 NETDEV WATCHDOG: eth0 (mtk_soc_eth): transmit queue 0 timed out Disabling the flow control on PORT 5 MAC seems to fix this issues as the pause frames are then filtered out. While at it, I'm removing the if condition completely as suggested, since this code is run only on mt7621 SoC, so there is no need to check for the silicon revisions. Ref: https://lists.openwrt.org/pipermail/openwrt-devel/2017-November/009882.html Ref: https://forum.openwrt.org/t/mtk-soc-eth-watchdog-timeout-after-r11573/50000/12 Suggested-by: Felix Fietkau <nbd@nbd.name> Reported-by: Rosen Penev <rosenp@gmail.com> Signed-off-by: Petr Štetiar <ynezz@true.cz>		2020-02-20 15:08:06 +01:00
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ethernet/mediatek	ramips: gsw_mt7621: disable PORT 5 MAC RX/TX flow control by default	2020-02-20 15:08:06 +01:00