1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 86933ca8b472..7dd3f9fb9f3f 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -643,11 +643,19 @@ static int acpi_battery_update(struct acpi_battery *battery)
 
 static void acpi_battery_refresh(struct acpi_battery *battery)
 {
+        int power_unit;
+
         if (!battery->bat.dev)
                 return;
 
+        power_unit = battery->power_unit;
+
         acpi_battery_get_info(battery);
-        /* The battery may have changed its reporting units. */
+
+        if (power_unit == battery->power_unit)
+                return;
+
+        /* The battery has changed its reporting units. */
         sysfs_remove_battery(battery);
         sysfs_add_battery(battery);
 }