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

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Message-Id: <20200925124735.594188685@linuxfoundation.org>
Date:   Fri, 25 Sep 2020 14:48:42 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Parshuram Thombare <pthombar@...ence.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.8 52/56] net: macb: fix for pause frame receive enable bit

From: Parshuram Thombare <pthombar@...ence.com>

[ 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@...ence.com>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 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);