Issues reading battery status

Hi,

I have been suffering a pair of problems with ACPI reading the battery
status on my laptop. The two issues are:

1: This error occurs every time you do acpi -V
--------------------------------------------------------------------------------------

Sep  6 15:00:28 localhost kernel: [ACPI Debug] String: Length 0x1E, "====BAT0 _BST UPBS() entry===="
Sep  6 15:00:28 localhost kernel: exconvrt-0664: *** Error: Bad destination type during conversion: 4
Sep  6 15:00:28 localhost kernel:  psparse-1133: *** Error: Method execution failed [\_SB_.BAT0.GBFE] (Node c11e5d68), AE_AML_INTERNAL
Sep  6 15:00:28 localhost kernel:  psparse-1133: *** Error: Method execution failed [\_SB_.BAT0.UPBS] (Node c11e58e8), AE_AML_INTERNAL
Sep  6 15:00:28 localhost kernel:  psparse-1133: *** Error: Method execution failed [\_SB_.BAT0._BST] (Node c11e4348), AE_AML_INTERNAL
Sep  6 15:00:28 localhost kernel: acpi_battery-0207 [31] acpi_battery_get_statu: Error evaluating _BST
Sep  6 15:00:28 localhost kernel: [ACPI Debug] String: Length 0x1B, "====BAT0 _BIF End Error===="

--------------------------------------------------------------------------------------

2: This occurs from time to time let's say that if we repeat "acpi -V"
every 2 seconds this error appears every 40 seconds
--------------------------------------------------------------------------------------

Sep  6 15:00:16 localhost kernel: [ACPI Debug] String: Length 0x1E, "====BAT0 _BST UPBS() entry===="
Sep  6 15:00:16 localhost kernel: [ACPI Debug] String: Length 0x1B, "====BAT0 _BST End Error===="
Sep  6 15:00:16 localhost kernel: evregion-0347: *** Error: Handler for [EmbeddedControl] returned AE_TIME
Sep  6 15:00:16 localhost kernel:  dswexec-0435 [38] ds_exec_end_op        : [Store]: Could not resolve operands, AE_TIME
Sep  6 15:00:16 localhost kernel:  psparse-1133: *** Error: Method execution failed [\_SB_.PCI0.LPC0.EC0_.SBR_] (Node c11e1b28), AE_TIME
Sep  6 15:00:16 localhost kernel:  psparse-1133: *** Error: Method execution failed [\_SB_.BAT0.UPBI] (Node c11e59a8), AE_TIME
Sep  6 15:00:16 localhost kernel:  psparse-1133: *** Error: Method execution failed [\_SB_.BAT0._BIF] (Node c11e4408), AE_TIME
Sep  6 15:00:16 localhost kernel: acpi_battery-0146 [30] acpi_battery_get_info : Error evaluating _BIF

--------------------------------------------------------------------------------------

I have followed problem 1 and I have resolved it applying next diff to
file /usr/src/linux/drivers/acpi/executer/exconvrt.c :
--------------------------------------------------------------------------------------

@@ -631,6 +631,7 @@
   case ACPI_TYPE_BUFFER_FIELD:
   case ACPI_TYPE_LOCAL_BANK_FIELD:
   case ACPI_TYPE_LOCAL_INDEX_FIELD:
+  case ACPI_TYPE_PACKAGE:
    /*
     * These types require an Integer operand.  We can convert
     * a Buffer or a String to an Integer if necessary.

------------------------------------------------------------------------------------

And now the first error doesn't occurs, but I still have the second one. Also my patch just uses the function "acpi_ex_convert_to_integer" with an
ACPI_TYPE_PACKAGE and that works, but I wonder if this is the best approach to the problem.

Any idea about how to resolve problem 2 or improve the solution to
problem 1?

Regards and thanks in advance.

P.S.: DSDT is correct except by the typical WAK warning, but I have tried
it with a corrected DSDT and there was no change.

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