linux-kernel - [RFC PATCH net-next 1/7] net: sunhme: Just restart autonegotiation if we can't bring the link up

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Date:   Wed, 22 Feb 2023 16:03:49 -0500
From:   Sean Anderson <seanga2@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Sean Anderson <seanga2@...il.com>
Subject: [RFC PATCH net-next 1/7] net: sunhme: Just restart autonegotiation if we can't bring the link up

If we've tried regular autonegotiation and forcing the link mode, just
restart autonegotiation instead of reinitializing the whole NIC.

Signed-off-by: Sean Anderson <seanga2@...il.com>
---

 drivers/net/ethernet/sun/sunhme.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c
index dd14114cbcfb..3eeda8f3fa80 100644
--- a/drivers/net/ethernet/sun/sunhme.c
+++ b/drivers/net/ethernet/sun/sunhme.c
@@ -589,7 +589,10 @@ static int set_happy_link_modes(struct happy_meal *hp, void __iomem *tregs)
 	return 1;
 }
 
-static int happy_meal_init(struct happy_meal *hp);
+static void
+happy_meal_begin_auto_negotiation(struct happy_meal *hp,
+				  void __iomem *tregs,
+				  const struct ethtool_link_ksettings *ep);
 
 static int is_lucent_phy(struct happy_meal *hp)
 {
@@ -743,12 +746,7 @@ static void happy_meal_timer(struct timer_list *t)
 					netdev_notice(hp->dev,
 						      "Link down, cable problem?\n");
 
-					ret = happy_meal_init(hp);
-					if (ret) {
-						/* ho hum... */
-						netdev_err(hp->dev,
-							   "Error, cannot re-init the Happy Meal.\n");
-					}
+					happy_meal_begin_auto_negotiation(hp, tregs, NULL);
 					goto out;
 				}
 				if (!is_lucent_phy(hp)) {
-- 
2.37.1