[PATCH 5.8 52/56] net: macb: fix for pause frame receive enable bit

From: Greg Kroah-Hartman
Date: Fri Sep 25 2020 - 08:50:46 EST


From: Parshuram Thombare <pthombar@xxxxxxxxxxx>

[ Upstream commit d7739b0b6d15ef9ad5c79424736b8ded5ed3e913 ]

PAE bit of NCFGR register, when set, pauses transmission
if a non-zero 802.3 classic pause frame is received.

Fixes: 7897b071ac3b ("net: macb: convert to phylink")
Signed-off-by: Parshuram Thombare <pthombar@xxxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/cadence/macb_main.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -647,8 +647,7 @@ static void macb_mac_link_up(struct phyl
ctrl |= GEM_BIT(GBE);
}

- /* We do not support MLO_PAUSE_RX yet */
- if (tx_pause)
+ if (rx_pause)
ctrl |= MACB_BIT(PAE);

macb_set_tx_clk(bp->tx_clk, speed, ndev);