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cpufreq: intel_pstate: Wait for canceled delayed work to complete

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Make intel_pstate_disable_hwp_interrupt() wait for canceled delayed work
to complete to avoid leftover work items running when it returns which
may be during driver unregistration and may confuse things going forward.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki 2024-03-21 20:32:02 +01:00
parent 12ebba42d2
commit 432acb219a
1 changed files with 6 additions and 2 deletions
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8
drivers/cpufreq/intel_pstate.c
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@ -1682,6 +1682,8 @@ ack_intr:
static void intel_pstate_disable_hwp_interrupt(struct cpudata *cpudata)
{
bool cancel_work;
if (!boot_cpu_has(X86_FEATURE_HWP_NOTIFY))
return;
@ -1689,9 +1691,11 @@ static void intel_pstate_disable_hwp_interrupt(struct cpudata *cpudata)
wrmsrl_on_cpu(cpudata->cpu, MSR_HWP_INTERRUPT, 0x00);
spin_lock_irq(&hwp_notify_lock);
if (cpumask_test_and_clear_cpu(cpudata->cpu, &hwp_intr_enable_mask))
cancel_delayed_work(&cpudata->hwp_notify_work);
cancel_work = cpumask_test_and_clear_cpu(cpudata->cpu, &hwp_intr_enable_mask);
spin_unlock_irq(&hwp_notify_lock);
if (cancel_work)
cancel_delayed_work_sync(&cpudata->hwp_notify_work);
}
static void intel_pstate_enable_hwp_interrupt(struct cpudata *cpudata)