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intel_idle: remove superfluous dev->state_count initialization

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intel_idle driver sets dev->state_count to drv->state_count so
the default dev->state_count initialization in cpuidle_enable_device()
(called from cpuidle_register_device()) can be used instead.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Len Brown <lenb@kernel.org>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2013-12-20 19:47:29 +01:00 committed by Rafael J. Wysocki
parent dbf87ab89f
commit 4955a5412c
1 changed files with 0 additions and 29 deletions
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29
drivers/idle/intel_idle.c
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@ -644,39 +644,10 @@ static int __init intel_idle_cpuidle_driver_init(void)
*/ */
static int intel_idle_cpu_init(int cpu) static int intel_idle_cpu_init(int cpu)
{ {
int cstate;
struct cpuidle_device *dev; struct cpuidle_device *dev;
dev = per_cpu_ptr(intel_idle_cpuidle_devices, cpu); dev = per_cpu_ptr(intel_idle_cpuidle_devices, cpu);
dev->state_count = 1;
for (cstate = 0; cstate < CPUIDLE_STATE_MAX; ++cstate) {
int num_substates, mwait_hint, mwait_cstate, mwait_substate;
if (cpuidle_state_table[cstate].enter == NULL)
break;
if (cstate + 1 > max_cstate) {
printk(PREFIX "max_cstate %d reached\n", max_cstate);
break;
}
mwait_hint = flg2MWAIT(cpuidle_state_table[cstate].flags);
mwait_cstate = MWAIT_HINT2CSTATE(mwait_hint);
mwait_substate = MWAIT_HINT2SUBSTATE(mwait_hint);
/* does the state exist in CPUID.MWAIT? */
num_substates = (mwait_substates >> ((mwait_cstate + 1) * 4))
& MWAIT_SUBSTATE_MASK;
/* if sub-state in table is not enumerated by CPUID */
if ((mwait_substate + 1) > num_substates)
continue;
dev->state_count += 1;
}
dev->cpu = cpu; dev->cpu = cpu;
if (cpuidle_register_device(dev)) { if (cpuidle_register_device(dev)) {