From: stephen hemminger <shemminger@vyatta.com>
Date: Mon, 29 Mar 2010 07:36:20 +0000 (+0000)
Subject: sky2: avoid duplicate link up on Optima chip
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9badba2543d165154c540b80e59ff06c1b3e3f76;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

sky2: avoid duplicate link up on Optima chip

The Optima version has feature to detect link quickly without PHY interrupt,
but it causes duplicate link up events.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index eec36995af22..f1c0ec308bfe 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -2146,7 +2146,8 @@ static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
 		   istatus, phystat);
 
 	if (istatus & PHY_M_IS_AN_COMPL) {
-		if (sky2_autoneg_done(sky2, phystat) == 0)
+		if (sky2_autoneg_done(sky2, phystat) == 0 &&
+		    !netif_carrier_ok(dev))
 			sky2_link_up(sky2);
 		goto out;
 	}