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>

diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 920232ffb28296e5d0144d6a899b34c663bdcbd5..282186e532909fbfdbc79274b73226fe92eca577 100644 (file)
--- 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)) {