linux-kernel - [PATCH v2] net: arc_emac: switch to phy_start()/phy

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Message-Id: <1492694974-31023-1-git-send-email-al.kochet@gmail.com>
Date:   Thu, 20 Apr 2017 16:29:34 +0300
From:   Alexander Kochetkov <al.kochet@...il.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Philippe Reynes <tremyfr@...il.com>,
        Peter Chen <peter.chen@....com>,
        Wei Yongjun <weiyongjun1@...wei.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Alexander Kochetkov <al.kochet@...il.com>
Subject: [PATCH v2] net: arc_emac: switch to phy_start()/phy_stop()

Currently driver use phy_start_aneg() in arc_emac_open() to bring
up PHY. But phy_start() function is more appropriate for this purposes.
Besides that it call phy_start_aneg() as part of PHY startup sequence
it also can correctly bring up PHY from error and suspended states.
So the patch replace phy_start_aneg() to phy_start().

Also the patch add call to phy_stop() to arc_emac_stop() to allow
the PHY device to be fully suspended when the interface is unused.

Signed-off-by: Alexander Kochetkov <al.kochet@...il.com>
---

Changes in v2:
- Updated commit message to clarify changes

 drivers/net/ethernet/arc/emac_main.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c
index abc9f2a..188676d 100644
--- a/drivers/net/ethernet/arc/emac_main.c
+++ b/drivers/net/ethernet/arc/emac_main.c
@@ -434,7 +434,7 @@ static int arc_emac_open(struct net_device *ndev)
 	/* Enable EMAC */
 	arc_reg_or(priv, R_CTRL, EN_MASK);
 
-	phy_start_aneg(ndev->phydev);
+	phy_start(ndev->phydev);
 
 	netif_start_queue(ndev);
 
@@ -556,6 +556,8 @@ static int arc_emac_stop(struct net_device *ndev)
 	napi_disable(&priv->napi);
 	netif_stop_queue(ndev);
 
+	phy_stop(ndev->phydev);
+
 	/* Disable interrupts */
 	arc_reg_clr(priv, R_ENABLE, RXINT_MASK | TXINT_MASK | ERR_MASK);
 
-- 
1.7.9.5