Ticket #6951: acpi_battery_r1.patch

src/add-ons/kernel/drivers/power/acpi_battery/acpi_battery.cpp

@@ -4 +4 @@
  *
  * Authors:
  *      Clemens Zeidler, haiku@clemens-zeidler.de
+ *      Alexander von Gluck, kallisti5@unixzen.com
  */
 
 #include "acpi_battery.h"
@@ -59 +60 @@
 
     pointer = object->data.package.objects;
     batteryStatus->state = (pointer->object_type == ACPI_TYPE_INTEGER)
-        ? pointer->data.integer : -1;
+        ? pointer->data.integer : BATTERY_CRITICAL_STATE; 
 
     pointer++;
     batteryStatus->current_rate = (pointer->object_type == ACPI_TYPE_INTEGER)
@@ -73 +74 @@
     batteryStatus->voltage = (pointer->object_type == ACPI_TYPE_INTEGER)
         ? pointer->data.integer : -1;
 
+    /* If key values are all < 0, it is likely that the battery slot is empty
+       or the battery is damaged.  Set BATTERY_CRITICAL_STATE */
+    if (batteryStatus->voltage < 0
+        && batteryStatus->current_rate < 0
+        && batteryStatus->capacity < 0) {
+        batteryStatus->state = BATTERY_CRITICAL_STATE;
+    }
+    
+
 exit:
     free(buffer.pointer);
     return status;