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authorRichard Cochran <rcochran@linutronix.de>2016-04-06 17:00:54 -0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-04-07 22:10:58 +0200
commit2259a819a8d37e472f08c88bc0dd22194754adb4 (patch)
tree2cb425544ec2a864e0522e7e571a7f705bb5b7c0 /drivers/idle
parentca42489d9ee3262482717c83428e087322fdc39c (diff)
intel_idle: Setup the timer broadcast only on successful driver load.
This driver sets the broadcast tick quite early on during probe and does not clean up again in cast of failure. This patch moves the setup call after the registration, placing the on_each_cpu() calls within the global CPU lock region. Signed-off-by: Richard Cochran <rcochran@linutronix.de> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/idle')
-rw-r--r--drivers/idle/intel_idle.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 0b568728867e..ab34cd8b933c 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -987,16 +987,9 @@ static int __init intel_idle_probe(void)
icpu = (const struct idle_cpu *)id->driver_data;
cpuidle_state_table = icpu->state_table;
- if (boot_cpu_has(X86_FEATURE_ARAT)) /* Always Reliable APIC Timer */
- lapic_timer_reliable_states = LAPIC_TIMER_ALWAYS_RELIABLE;
- else
- on_each_cpu(__setup_broadcast_timer, (void *)true, 1);
-
pr_debug(PREFIX "v" INTEL_IDLE_VERSION
" model 0x%X\n", boot_cpu_data.x86_model);
- pr_debug(PREFIX "lapic_timer_reliable_states 0x%x\n",
- lapic_timer_reliable_states);
return 0;
}
@@ -1234,8 +1227,16 @@ static int __init intel_idle_init(void)
}
__register_cpu_notifier(&cpu_hotplug_notifier);
+ if (boot_cpu_has(X86_FEATURE_ARAT)) /* Always Reliable APIC Timer */
+ lapic_timer_reliable_states = LAPIC_TIMER_ALWAYS_RELIABLE;
+ else
+ on_each_cpu(__setup_broadcast_timer, (void *)true, 1);
+
cpu_notifier_register_done();
+ pr_debug(PREFIX "lapic_timer_reliable_states 0x%x\n",
+ lapic_timer_reliable_states);
+
return 0;
}

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