cpuidle: haltpoll: Remove single state handling

cpuidle systems where the governor has no choice because there's only
a single idle state are now handled by cpuidle core and bypass the
governor, so remove the related handling.

Signed-off-by: Aboorva Devarajan <[email protected]>
Reviewed-by: Christian Loehle <[email protected]>
[ rjw: Extended the change to drop a redundant local variable ]
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: AboorvaDevarajan

drivers/cpuidle/governors/haltpoll.c

@@ -50,9 +50,7 @@ static int haltpoll_select(struct cpuidle_driver *drv,
 			   struct cpuidle_device *dev,
 			   bool *stop_tick)
 {
-	s64 latency_req = cpuidle_governor_latency_req(dev->cpu);
-
-	if (!drv->state_count || latency_req == 0) {
+	if (cpuidle_governor_latency_req(dev->cpu) == 0) {
 		*stop_tick = false;
 		return 0;
 	}