Messages in this thread | | | Date | Tue, 27 Oct 2015 08:40:30 -0700 | From | Florian Fainelli <> | Subject | Re: [PATCH 6/6] net: phy: Stop 'phy-state-machine' and 'phy_change' work on remove |
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On 27/10/15 07:49, Neil Armstrong wrote: > 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
Stripped down oops can sometimes be missing critical pieces of information to help debug the problem, is there a reason why this is being obfuscated?
You are supposed to stop the PHY state machine by calling phy_disconnect() is it possible that this is missing?
> > 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; >
-- Florian
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