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net: phy: Avoid deadlock during phy_error()

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am: feaa5bab43

Change-Id: I5698aaec3dc28e69f88860c762d47cf554977bfe
This commit is contained in:
Florian Fainelli
2017-03-22 11:56:55 +00:00
committed by android-build-merger
parent 6a3a773418 feaa5bab43
commit d0ae0e0640
1 changed files with 9 additions and 5 deletions
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14
drivers/net/phy/phy.c
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@@ -611,14 +611,18 @@ void phy_start_machine(struct phy_device *phydev)
* phy_trigger_machine - trigger the state machine to run
*
* @phydev: the phy_device struct
* @sync: indicate whether we should wait for the workqueue cancelation
*
* Description: There has been a change in state which requires that the
* state machine runs.
*/
static void phy_trigger_machine(struct phy_device *phydev)
static void phy_trigger_machine(struct phy_device *phydev, bool sync)
{
cancel_delayed_work_sync(&phydev->state_queue);
if (sync)
cancel_delayed_work_sync(&phydev->state_queue);
else
cancel_delayed_work(&phydev->state_queue);
queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0);
}
@@ -655,7 +659,7 @@ static void phy_error(struct phy_device *phydev)
phydev->state = PHY_HALTED;
mutex_unlock(&phydev->lock);
phy_trigger_machine(phydev);
phy_trigger_machine(phydev, false);
}
/**
@@ -817,7 +821,7 @@ void phy_change(struct work_struct *work)
}
/* reschedule state queue work to run as soon as possible */
phy_trigger_machine(phydev);
phy_trigger_machine(phydev, true);
return;
ignore:
@@ -907,7 +911,7 @@ void phy_start(struct phy_device *phydev)
if (do_resume)
phy_resume(phydev);
phy_trigger_machine(phydev);
phy_trigger_machine(phydev, true);
}
EXPORT_SYMBOL(phy_start);