SP chips have a hardware bug preventing XON flow control support, so the driver disables it.
Cc: [email protected] Signed-off-by: Zaiyu Wang <[email protected]> --- drivers/net/txgbe/base/txgbe_hw.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/txgbe/base/txgbe_hw.c b/drivers/net/txgbe/base/txgbe_hw.c index 52fead6171..0719b56e3c 100644 --- a/drivers/net/txgbe/base/txgbe_hw.c +++ b/drivers/net/txgbe/base/txgbe_hw.c @@ -1035,8 +1035,10 @@ s32 txgbe_fc_enable(struct txgbe_hw *hw) for (i = 0; i < TXGBE_DCB_TC_MAX; i++) { if ((hw->fc.current_mode & txgbe_fc_tx_pause) && hw->fc.high_water[i]) { - fcrtl = TXGBE_FCWTRLO_TH(hw->fc.low_water[i]) | - TXGBE_FCWTRLO_XON; + fcrtl = TXGBE_FCWTRLO_TH(hw->fc.low_water[i]); + /* SP doesn't support xon */ + if (hw->mac.type == txgbe_mac_aml || hw->mac.type == txgbe_mac_aml40) + fcrtl |= TXGBE_FCWTRLO_XON; fcrth = TXGBE_FCWTRHI_TH(hw->fc.high_water[i]) | TXGBE_FCWTRHI_XOFF; } else { -- 2.21.0.windows.1
