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authorJiri Kosina <jikos@jikos.cz>2006-10-10 14:20:41 -0700
committerLen Brown <len.brown@intel.com>2006-10-14 02:22:51 -0400
commit34c4415ab857dc6d51db08d62bcd45d4b8513bb6 (patch)
tree310a568ec57a1eaceba762e6d2db8c8b9fe066d9 /drivers/acpi
parent3cd5b87d96db503f69a5892b8f5350d356d18969 (diff)
ACPI: check battery status on resume for un/plug events during sleep
Add ->resume method to the ACPI battery handler to check if the battery state has changed during sleep. If yes, update the ACPI internal data structures for benefit of /proc/acpi/battery/. Signed-off-by: Jiri Kosina <jikos@jikos.cz> Cc: Stefan Seyfried <seife@suse.de> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/battery.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 9810e2a55d0..026e40755cd 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -64,6 +64,7 @@ extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
static int acpi_battery_add(struct acpi_device *device);
static int acpi_battery_remove(struct acpi_device *device, int type);
+static int acpi_battery_resume(struct acpi_device *device, int status);
static struct acpi_driver acpi_battery_driver = {
.name = ACPI_BATTERY_DRIVER_NAME,
@@ -71,6 +72,7 @@ static struct acpi_driver acpi_battery_driver = {
.ids = ACPI_BATTERY_HID,
.ops = {
.add = acpi_battery_add,
+ .resume = acpi_battery_resume,
.remove = acpi_battery_remove,
},
};
@@ -753,6 +755,18 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
return 0;
}
+/* this is needed to learn about changes made in suspended state */
+static int acpi_battery_resume(struct acpi_device *device, int state)
+{
+ struct acpi_battery *battery;
+
+ if (!device)
+ return -EINVAL;
+
+ battery = device->driver_data;
+ return acpi_battery_check(battery);
+}
+
static int __init acpi_battery_init(void)
{
int result;