Sometimes the Battery driver doesn't get notifications when it's
plugged/unplugged. And this results in the incorrect Battery
status reported by the power supply sysfs I/F.
Update the Battery status first when querying from sysfs.
Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
---
drivers/acpi/battery.c | 3 +++
1 file changed, 3 insertions(+)
Index: linux-2.6/drivers/acpi/battery.c
===================================================================
--- linux-2.6.orig/drivers/acpi/battery.c
+++ linux-2.6/drivers/acpi/battery.c
@@ -184,6 +184,9 @@ static int acpi_battery_get_property(str
int ret = 0;
struct acpi_battery *battery = to_acpi_battery(psy);
+ if (acpi_battery_update(battery))
+ return -ENODEV;
+
if (acpi_battery_present(battery)) {
/* run battery update only if it is present */
acpi_battery_get_state(battery);
--
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