The function needs the cpuidle_device which is initially passed to the
caller.
The current code gets the struct device from the struct cpuidle_device,
pass it the cpuidle_add_sysfs function. This function calls
per_cpu(cpuidle_devices, cpu) to get the cpuidle_device.
This patch pass the cpuidle_device instead and simplify the code.
Signed-off-by: Daniel Lezcano <daniel.lezc...@linaro.org>
---
drivers/cpuidle/cpuidle.c | 8 +++-----
drivers/cpuidle/cpuidle.h | 6 ++----
drivers/cpuidle/sysfs.c | 12 +++---------
3 files changed, 8 insertions(+), 18 deletions(-)
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index e28f6ea..07c6637 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -394,7 +394,6 @@ EXPORT_SYMBOL_GPL(cpuidle_disable_device);
static int __cpuidle_register_device(struct cpuidle_device *dev)
{
int ret;
- struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
if (!try_module_get(cpuidle_driver->owner))
@@ -404,7 +403,7 @@ static int __cpuidle_register_device(struct cpuidle_device
*dev)
per_cpu(cpuidle_devices, dev->cpu) = dev;
list_add(&dev->device_list, &cpuidle_detected_devices);
- ret = cpuidle_add_sysfs(cpu_dev);
+ ret = cpuidle_add_sysfs(dev);
if (ret)
goto err_sysfs;
@@ -416,7 +415,7 @@ static int __cpuidle_register_device(struct cpuidle_device
*dev)
return 0;
err_coupled:
- cpuidle_remove_sysfs(cpu_dev);
+ cpuidle_remove_sysfs(dev);
wait_for_completion(&dev->kobj_unregister);
err_sysfs:
list_del(&dev->device_list);
@@ -460,7 +459,6 @@ EXPORT_SYMBOL_GPL(cpuidle_register_device);
*/
void cpuidle_unregister_device(struct cpuidle_device *dev)
{
- struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
if (dev->registered == 0)
@@ -470,7 +468,7 @@ void cpuidle_unregister_device(struct cpuidle_device *dev)
cpuidle_disable_device(dev);
- cpuidle_remove_sysfs(cpu_dev);
+ cpuidle_remove_sysfs(dev);
list_del(&dev->device_list);
wait_for_completion(&dev->kobj_unregister);
per_cpu(cpuidle_devices, dev->cpu) = NULL;
diff --git a/drivers/cpuidle/cpuidle.h b/drivers/cpuidle/cpuidle.h
index 76e7f69..a5bbd1c 100644
--- a/drivers/cpuidle/cpuidle.h
+++ b/drivers/cpuidle/cpuidle.h
@@ -5,8 +5,6 @@
#ifndef __DRIVER_CPUIDLE_H
#define __DRIVER_CPUIDLE_H
-#include <linux/device.h>
-
/* For internal use only */
extern struct cpuidle_governor *cpuidle_curr_governor;
extern struct list_head cpuidle_governors;
@@ -29,8 +27,8 @@ extern int cpuidle_add_interface(struct device *dev);
extern void cpuidle_remove_interface(struct device *dev);
extern int cpuidle_add_state_sysfs(struct cpuidle_device *device);
extern void cpuidle_remove_state_sysfs(struct cpuidle_device *device);
-extern int cpuidle_add_sysfs(struct device *dev);
-extern void cpuidle_remove_sysfs(struct device *dev);
+extern int cpuidle_add_sysfs(struct cpuidle_device *dev);
+extern void cpuidle_remove_sysfs(struct cpuidle_device *dev);
#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
bool cpuidle_state_is_coupled(struct cpuidle_device *dev,
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index 5f809e3..84e6285 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -408,13 +408,11 @@ void cpuidle_remove_state_sysfs(struct cpuidle_device
*device)
* cpuidle_add_sysfs - creates a sysfs instance for the target device
* @dev: the target device
*/
-int cpuidle_add_sysfs(struct device *cpu_dev)
+int cpuidle_add_sysfs(struct cpuidle_device *dev)
{
- int cpu = cpu_dev->id;
- struct cpuidle_device *dev;
+ struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
int error;
- dev = per_cpu(cpuidle_devices, cpu);
error = kobject_init_and_add(&dev->kobj, &ktype_cpuidle, &cpu_dev->kobj,
"cpuidle");
if (!error)
@@ -426,11 +424,7 @@ int cpuidle_add_sysfs(struct device *cpu_dev)
* cpuidle_remove_sysfs - deletes a sysfs instance on the target device
* @dev: the target device
*/
-void cpuidle_remove_sysfs(struct device *cpu_dev)
+void cpuidle_remove_sysfs(struct cpuidle_device *dev)
{
- int cpu = cpu_dev->id;
- struct cpuidle_device *dev;
-
- dev = per_cpu(cpuidle_devices, cpu);
kobject_put(&dev->kobj);
}
--
1.7.5.4
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