netdev - [PATCH v2 net-next 1/3] net: phy: check that PHY is stopped when entering phy

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Message-ID: <36d66609-9d1f-a116-c12b-266802eb61de@gmail.com>
Date:   Wed, 16 Jan 2019 21:25:15 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH v2 net-next 1/3] net: phy: check that PHY is stopped when
 entering phy_disconnect

Every driver should have called phy_stop() before calling
phy_disconnect(). Let's check for this and ensure PHY is stopped
when starting with the actual work in phy_disconnect().

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/phy/phy_device.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index b5f5cda4c..46ec71021 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -999,6 +999,11 @@ EXPORT_SYMBOL(phy_connect);
  */
 void phy_disconnect(struct phy_device *phydev)
 {
+	if (phy_is_started(phydev)) {
+		phydev_warn(phydev, "phy_stop should have been called before phy_disconnect!\n");
+		phy_stop(phydev);
+	}
+
 	if (phydev->irq > 0)
 		phy_stop_interrupts(phydev);
 
-- 
2.20.1