process reading battery status hangs

http://bugzilla.kernel.org/show_bug.cgi?id=8351

Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index fc9c50ab521978627d33e583898761e786561b43..b5df318978ed38056da5c5784bb5a017b8e35571 100644 (file)
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -937,10 +937,8 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
        case ACPI_BATTERY_NOTIFY_INFO:
        case ACPI_NOTIFY_BUS_CHECK:
        case ACPI_NOTIFY_DEVICE_CHECK:
-               acpi_battery_mutex_lock(battery);
                device = battery->device;
                acpi_battery_notify_update(battery);
-               acpi_battery_mutex_unlock(battery);
                acpi_bus_generate_event(device, event,
                                        acpi_battery_present(battery));
                break;