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SubjectRe: [PATCH, RFC] [1/3] Generic in-kernel AC status
Whoops - missing <linux/module.h>. Here's the fixed version.

Signed-Off-By: Matthew Garrett <mjg59@srcf.ucam.org>

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 5be87ba..59ece0f 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -129,6 +129,8 @@ struct pm_ops {

extern void pm_set_ops(struct pm_ops *);
extern struct pm_ops *pm_ops;
+extern void pm_set_ac_status(int (*ac_status_function)(void));
+extern int pm_get_ac_status(void);
extern int pm_suspend(suspend_state_t state);


diff --git a/kernel/power/main.c b/kernel/power/main.c
index 46110d5..453cd0e 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -15,7 +15,7 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/pm.h>
-
+#include <linux/module.h>

#include "power.h"

@@ -25,6 +25,7 @@
DECLARE_MUTEX(pm_sem);

struct pm_ops *pm_ops = NULL;
+int (*get_ac_status)(void);
suspend_disk_method_t pm_disk_mode = PM_DISK_SHUTDOWN;

/**
@@ -39,6 +40,39 @@ void pm_set_ops(struct pm_ops * ops)
up(&pm_sem);
}

+/**
+ * pm_set_ac_status - Set the ac status callback
+ * @ops: Pointer to function
+ */
+
+void pm_set_ac_status(int (*ac_status_function)(void))
+{
+ down(&pm_sem);
+ get_ac_status = ac_status_function;
+ up(&pm_sem);
+}
+
+EXPORT_SYMBOL(pm_set_ac_status);
+
+/**
+ * pm_get_ac_status - return true if the system is on AC
+ */
+
+int pm_get_ac_status(void)
+{
+ int status;
+
+ down (&pm_sem);
+ if (get_ac_status)
+ status = get_ac_status();
+ else
+ status = 0;
+ up (&pm_sem);
+
+ return status;
+}
+
+EXPORT_SYMBOL(pm_get_ac_status);

/**
* suspend_prepare - Do prep work before entering low-power state.

--
Matthew Garrett | mjg59@srcf.ucam.org
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