diff options
| -rw-r--r-- | drivers/acpi/battery.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 4ba339d0ea19..40bf01d42cc3 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -573,11 +573,16 @@ static int sysfs_add_battery(struct acpi_battery *battery) static void sysfs_remove_battery(struct acpi_battery *battery) { - if (!battery->bat.dev) + mutex_lock(&battery->lock); + if (!battery->bat.dev) { + mutex_unlock(&battery->lock); return; + } + device_remove_file(battery->bat.dev, &alarm_attr); power_supply_unregister(&battery->bat); battery->bat.dev = NULL; + mutex_unlock(&battery->lock); } /* |