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| author | Florian Fainelli <f.fainelli@gmail.com> | 2017-02-18 03:07:33 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-11 19:08:55 +0300 |
| commit | 2933fb22de6dc58ec1b8f0b1c8569d3699e5d7ea (patch) | |
| tree | ce7d016081e43e3e80b5116ab5bd3933eac98a2e | |
| parent | a8f1b40bb2da3819cda93a037124b34f56f5d5fa (diff) | |
| download | linux-2933fb22de6dc58ec1b8f0b1c8569d3699e5d7ea.tar.xz | |
net: phy: Fix PHY unbind crash
commit 7b9a88a390dacb37b051a7b09b9a08f546edf5eb 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: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/phy/phy_device.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 1d1e5f7723ab..8179727d3423 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -1368,6 +1368,8 @@ static int phy_remove(struct device *dev) { struct phy_device *phydev = to_phy_device(dev); + cancel_delayed_work_sync(&phydev->state_queue); + mutex_lock(&phydev->lock); phydev->state = PHY_DOWN; mutex_unlock(&phydev->lock); |