diff options
| author |   Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2013-12-20 19:47:29 +0100 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-01-11 01:26:49 +0100 |
| commit | 4955a5412cad83da6e994d939bdb4f7887e4585e (patch) | |
| tree | cdf8df2b5a1e68352b9b96ef089d7decf19617ef /drivers/idle | |
| parent | intel_idle: do C1E promotion disable quirk for hotplugged CPUs (diff) | |
| download | linux-dev-4955a5412cad83da6e994d939bdb4f7887e4585e.tar.xz linux-dev-4955a5412cad83da6e994d939bdb4f7887e4585e.zip | |
intel_idle: remove superfluous dev->state_count initialization
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>
Diffstat (limited to 'drivers/idle')
| -rw-r--r-- | drivers/idle/intel_idle.c | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index 920232ffb282..282186e53290 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -644,39 +644,10 @@ static int __init intel_idle_cpuidle_driver_init(void) */ static int intel_idle_cpu_init(int cpu) { - int cstate; struct cpuidle_device *dev; 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; if (cpuidle_register_device(dev)) { |