linux-kernel - [PATCH v2] net/phy: micrel: configure intterupts after autoneg workaround

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Message-ID: <1497980891-10495-1-git-send-email-zach.brown@ni.com>
Date:   Tue, 20 Jun 2017 12:48:11 -0500
From:   Zach Brown <zach.brown@...com>
To:     <f.fainelli@...il.com>
CC:     <andrew@...n.ch>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] net/phy: micrel: configure intterupts after autoneg workaround

The commit ("net/phy: micrel: Add workaround for bad autoneg") fixes an
autoneg failure case by resetting the hardware. This turns off
intterupts. Things will work themselves out if the phy polls, as it will
figure out it's state during a poll. However if the phy uses only
intterupts, the phy will stall, since interrupts are off. This patch
fixes the issue by calling config_intr after resetting the phy.

Fixes: d2fd719bcb0e ("net/phy: micrel: Add workaround for bad autoneg ")
Signed-off-by: Zach Brown <zach.brown@...com>
---
v2:
 * Check phy_intterupt_is_valid before calling config_intr

 drivers/net/phy/micrel.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 9365b07..fdb43dd 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -620,6 +620,8 @@ static int ksz9031_read_status(struct phy_device *phydev)
 	if ((regval & 0xFF) == 0xFF) {
 		phy_init_hw(phydev);
 		phydev->link = 0;
+		if (phydev->drv->config_intr && phy_interrupt_is_valid(phydev))
+			phydev->drv->config_intr(phydev);
 	}
 
 	return 0;
-- 
2.7.4