ACPI: battery: add sysfs serial number

egrep serial /proc/acpi/battery/BAT0/info
serial number:           32090

serial number can tell you from the imminent danger
of beeing set on fire.

Signed-off-by: maximilian attems <max@stro.at>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index d4824840c5bf..ad2bed0174d6 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -116,6 +116,7 @@ static struct device_attribute power_supply_attrs[] = {
         /* Properties of type `const char *' */
         POWER_SUPPLY_ATTR(model_name),
         POWER_SUPPLY_ATTR(manufacturer),
+        POWER_SUPPLY_ATTR(serial_number),
 };
 
 static ssize_t power_supply_show_static_attrs(struct device *dev,