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authorLen Brown <len.brown@intel.com>2011-03-23 09:34:18 +0300
committerLen Brown <len.brown@intel.com>2011-03-23 09:34:18 +0300
commit96e1c408ea8a556c5b51e0e7d56bd2afbfbf5fe9 (patch)
tree805d8f519ba703cbe1ebd31304a329c1048a67ff /drivers/acpi
parentf7f28f7e8c42c67c4bce24415c6cd6da222a1798 (diff)
parent25be5821521640eb00b7eb219ffe59664510d073 (diff)
downloadlinux-96e1c408ea8a556c5b51e0e7d56bd2afbfbf5fe9.tar.xz
Merge branch 'battery-sysfs-notifier' into release
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/battery.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index ac1a599f5147..fcc13ac0aa18 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -33,6 +33,7 @@
#include <linux/async.h>
#include <linux/dmi.h>
#include <linux/slab.h>
+#include <linux/suspend.h>
#ifdef CONFIG_ACPI_PROCFS_POWER
#include <linux/proc_fs.h>
@@ -102,6 +103,7 @@ struct acpi_battery {
struct mutex lock;
struct power_supply bat;
struct acpi_device *device;
+ struct notifier_block pm_nb;
unsigned long update_time;
int rate_now;
int capacity_now;
@@ -940,6 +942,21 @@ static void acpi_battery_notify(struct acpi_device *device, u32 event)
power_supply_changed(&battery->bat);
}
+static int battery_notify(struct notifier_block *nb,
+ unsigned long mode, void *_unused)
+{
+ struct acpi_battery *battery = container_of(nb, struct acpi_battery,
+ pm_nb);
+ switch (mode) {
+ case PM_POST_SUSPEND:
+ sysfs_remove_battery(battery);
+ sysfs_add_battery(battery);
+ break;
+ }
+
+ return 0;
+}
+
static int acpi_battery_add(struct acpi_device *device)
{
int result = 0;
@@ -972,6 +989,10 @@ static int acpi_battery_add(struct acpi_device *device)
#endif
kfree(battery);
}
+
+ battery->pm_nb.notifier_call = battery_notify;
+ register_pm_notifier(&battery->pm_nb);
+
return result;
}
@@ -982,6 +1003,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
if (!device || !acpi_driver_data(device))
return -EINVAL;
battery = acpi_driver_data(device);
+ unregister_pm_notifier(&battery->pm_nb);
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_battery_remove_fs(device);
#endif