Messages in this thread Patch in this message | | | From | Neil Armstrong <> | Subject | [PATCH 6/6] net: phy: Stop 'phy-state-machine' and 'phy_change' work on remove | Date | Tue, 27 Oct 2015 15:49:21 +0100 |
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Avoids: Unable to handle kernel NULL pointer dereference at virtual address 00000064 Workqueue: events_power_efficient phy_state_machine PC is at phy_state_machine+0x28/0x480
Signed-off-by: Frode Isaksen <fisaksen@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> --- drivers/net/phy/phy_device.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 3833891..b5b6c1b 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -1348,6 +1348,12 @@ static int phy_remove(struct device *dev) phydev->state = PHY_DOWN; mutex_unlock(&phydev->lock);
+ cancel_delayed_work_sync(&phydev->state_queue); + flush_delayed_work(&phydev->state_queue); + + cancel_work_sync(&phydev->phy_queue); + flush_work(&phydev->phy_queue); + if (phydev->drv->remove) phydev->drv->remove(phydev); phydev->drv = NULL; -- 1.9.1
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