1 files changed, 14 insertions, 12 deletions

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index cada73ffdfa7..b2b48f8545c7 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -88,10 +88,13 @@ static const struct acpi_device_id battery_device_ids[] = {
 
 MODULE_DEVICE_TABLE(acpi, battery_device_ids);
 
-/* For buggy DSDTs that report negative 16-bit values for either charging
- * or discharging current and/or report 0 as 65536 due to bad math.
- */
-#define QUIRK_SIGNED16_CURRENT 0x0001
+enum {
+        ACPI_BATTERY_ALARM_PRESENT,
+        /* For buggy DSDTs that report negative 16-bit values for either charging
+        * or discharging current and/or report 0 as 65536 due to bad math.
+        */
+        ACPI_BATTERY_QUIRK_SIGNED16_CURRENT,
+};
 
 struct acpi_battery {
         struct mutex lock;
@@ -118,8 +121,7 @@ struct acpi_battery {
         char oem_info[32];
         int state;
         int power_unit;
-        u8 alarm_present;
-        long quirks;
+        unsigned long flags;
 };
 
 #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
@@ -399,7 +401,7 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
         battery->update_time = jiffies;
         kfree(buffer.pointer);
 
-        if ((battery->quirks & QUIRK_SIGNED16_CURRENT) &&
+        if (test_bit(ACPI_BATTERY_QUIRK_SIGNED16_CURRENT, &battery->flags) &&
             battery->rate_now != -1)
                 battery->rate_now = abs((s16)battery->rate_now);
 
@@ -412,7 +414,8 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery)
         union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER };
         struct acpi_object_list arg_list = { 1, &arg0 };
 
-        if (!acpi_battery_present(battery)|| !battery->alarm_present)
+        if (!acpi_battery_present(battery)||
+            !test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags))
                 return -ENODEV;
 
         arg0.integer.value = battery->alarm;
@@ -437,10 +440,10 @@ static int acpi_battery_init_alarm(struct acpi_battery *battery)
         /* See if alarms are supported, and if so, set default */
         status = acpi_get_handle(battery->device->handle, "_BTP", &handle);
         if (ACPI_FAILURE(status)) {
-                battery->alarm_present = 0;
+                clear_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags);
                 return 0;
         }
-        battery->alarm_present = 1;
+        set_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags);
         if (!battery->alarm)
                 battery->alarm = battery->design_capacity_warning;
         return acpi_battery_set_alarm(battery);
@@ -510,9 +513,8 @@ static void sysfs_remove_battery(struct acpi_battery *battery)
 
 static void acpi_battery_quirks(struct acpi_battery *battery)
 {
-        battery->quirks = 0;
         if (dmi_name_in_vendors("Acer") && battery->power_unit) {
-                battery->quirks |= QUIRK_SIGNED16_CURRENT;
+                set_bit(ACPI_BATTERY_QUIRK_SIGNED16_CURRENT, &battery->flags);
         }
 }