Commit c3c94716 authored by Florian Fainelli's avatar Florian Fainelli Committed by Greg Kroah-Hartman

net: phy: Fix PHY unbind crash

commit 7b9a88a3 upstream.

The PHY library does not deal very well with bind and unbind events. The first
thing we would see is that we were not properly canceling the PHY state machine
workqueue, so we would be crashing while dereferencing phydev->drv since there
is no driver attached anymore.
Suggested-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ef09c9ff
...@@ -1714,6 +1714,8 @@ static int phy_remove(struct device *dev) ...@@ -1714,6 +1714,8 @@ static int phy_remove(struct device *dev)
{ {
struct phy_device *phydev = to_phy_device(dev); struct phy_device *phydev = to_phy_device(dev);
cancel_delayed_work_sync(&phydev->state_queue);
mutex_lock(&phydev->lock); mutex_lock(&phydev->lock);
phydev->state = PHY_DOWN; phydev->state = PHY_DOWN;
mutex_unlock(&phydev->lock); mutex_unlock(&phydev->lock);
......
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