cpuidle: remove en_core_tk_irqen flag

The en_core_tk_irqen flag is set in all the cpuidle driver which
means it is not necessary to specify this flag.

Remove the flag and the code related to it.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Kevin Hilman <khilman@linaro.org>  # for mach-omap2/*
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

5 files changed, 18 insertions, 58 deletions

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index ee255c60bdac..f0df2c9434d2 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -918,7 +918,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 struct cpuidle_driver acpi_idle_driver = {
 	.name =		"acpi_idle",
 	.owner =	THIS_MODULE,
-	.en_core_tk_irqen = 1,
 };
 
 /**
diff --git a/drivers/cpuidle/cpuidle-calxeda.c b/drivers/cpuidle/cpuidle-calxeda.c
index e1aab38c5a8d..a3b56f5d33bd 100644
--- a/drivers/cpuidle/cpuidle-calxeda.c
+++ b/drivers/cpuidle/cpuidle-calxeda.c
@@ -100,7 +100,6 @@ static void calxeda_idle_cpuidle_devices_uninit(void)
 
 static struct cpuidle_driver calxeda_idle_driver = {
 	.name = "calxeda_idle",
-	.en_core_tk_irqen = 1,
 	.states = {
 		ARM_CPUIDLE_WFI_STATE,
 		{
diff --git a/drivers/cpuidle/cpuidle-kirkwood.c b/drivers/cpuidle/cpuidle-kirkwood.c
index 53aad7324965..6f3152436983 100644
--- a/drivers/cpuidle/cpuidle-kirkwood.c
+++ b/drivers/cpuidle/cpuidle-kirkwood.c
@@ -41,7 +41,6 @@ static int kirkwood_enter_idle(struct cpuidle_device *dev,
 static struct cpuidle_driver kirkwood_idle_driver = {
 	.name			= "kirkwood_idle",
 	.owner			= THIS_MODULE,
-	.en_core_tk_irqen	= 1,
 	.states[0]		= ARM_CPUIDLE_WFI_STATE,
 	.states[1]		= {
 		.enter			= kirkwood_enter_idle,
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index c50037029184..0da795b9dbbf 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -43,24 +43,6 @@ void disable_cpuidle(void)
 
 static int __cpuidle_register_device(struct cpuidle_device *dev);
 
-static inline int cpuidle_enter(struct cpuidle_device *dev,
-				struct cpuidle_driver *drv, int index)
-{
-	struct cpuidle_state *target_state = &drv->states[index];
-	return target_state->enter(dev, drv, index);
-}
-
-static inline int cpuidle_enter_tk(struct cpuidle_device *dev,
-			       struct cpuidle_driver *drv, int index)
-{
-	return cpuidle_wrap_enter(dev, drv, index, cpuidle_enter);
-}
-
-typedef int (*cpuidle_enter_t)(struct cpuidle_device *dev,
-			       struct cpuidle_driver *drv, int index);
-
-static cpuidle_enter_t cpuidle_enter_ops;
-
 /**
  * cpuidle_play_dead - cpu off-lining
  *
@@ -90,11 +72,27 @@ int cpuidle_play_dead(void)
  * @next_state: index into drv->states of the state to enter
  */
 int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
-		int next_state)
+			int index)
 {
 	int entered_state;
 
-	entered_state = cpuidle_enter_ops(dev, drv, next_state);
+	struct cpuidle_state *target_state = &drv->states[index];
+	ktime_t time_start, time_end;
+	s64 diff;
+
+	time_start = ktime_get();
+
+	entered_state = target_state->enter(dev, drv, index);
+
+	time_end = ktime_get();
+
+	local_irq_enable();
+
+	diff = ktime_to_us(ktime_sub(time_end, time_start));
+	if (diff > INT_MAX)
+		diff = INT_MAX;
+
+	dev->last_residency = (int) diff;
 
 	if (entered_state >= 0) {
 		/* Update cpuidle counters */
@@ -231,37 +229,6 @@ void cpuidle_resume(void)
 	mutex_unlock(&cpuidle_lock);
 }
 
-/**
- * cpuidle_wrap_enter - performs timekeeping and irqen around enter function
- * @dev: pointer to a valid cpuidle_device object
- * @drv: pointer to a valid cpuidle_driver object
- * @index: index of the target cpuidle state.
- */
-int cpuidle_wrap_enter(struct cpuidle_device *dev,
-				struct cpuidle_driver *drv, int index,
-				int (*enter)(struct cpuidle_device *dev,
-					struct cpuidle_driver *drv, int index))
-{
-	ktime_t time_start, time_end;
-	s64 diff;
-
-	time_start = ktime_get();
-
-	index = enter(dev, drv, index);
-
-	time_end = ktime_get();
-
-	local_irq_enable();
-
-	diff = ktime_to_us(ktime_sub(time_end, time_start));
-	if (diff > INT_MAX)
-		diff = INT_MAX;
-
-	dev->last_residency = (int) diff;
-
-	return index;
-}
-
 #ifdef CONFIG_ARCH_HAS_CPU_RELAX
 static int poll_idle(struct cpuidle_device *dev,
 		struct cpuidle_driver *drv, int index)
@@ -333,9 +300,6 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
 			return ret;
 	}
 
-	cpuidle_enter_ops = drv->en_core_tk_irqen ?
-		cpuidle_enter_tk : cpuidle_enter;
-
 	poll_idle_init(drv);
 
 	ret = cpuidle_add_device_sysfs(dev);
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index c99c31e8a821..6f80c132d4c9 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -71,7 +71,6 @@
 static struct cpuidle_driver intel_idle_driver = {
 	.name = "intel_idle",
 	.owner = THIS_MODULE,
-	.en_core_tk_irqen = 1,
 };
 /* intel_idle.max_cstate=0 disables driver */
 static int max_cstate = CPUIDLE_STATE_MAX - 1;