https://bugzilla.kernel.org/show_bug.cgi?id=25232
--- Comment #26 from Lan Tianyu <tianyu....@intel.com> 2013-05-09 13:08:35 ---
Sorry for late reply. From the output，
The first log show AML BIF/BIX return error charge_full and charge_full_design
/sys/class/power_supply/BAT0/charge_full:20499000 <==
/sys/class/power_supply/BAT0/charge_full_design:276000 <==
/sys/class/power_supply/BAT0/charge_now:4369000
Please try following patch
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index e710045..087c683 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -35,6 +35,7 @@
#include <linux/slab.h>
#include <linux/suspend.h>
#include <asm/unaligned.h>
+#include <linux/delay.h>
#ifdef CONFIG_ACPI_PROCFS_POWER
#include <linux/proc_fs.h>
@@ -429,9 +430,13 @@ static int acpi_battery_get_info(struct acpi_battery
*battery)
"_BIX" : "_BIF";
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ int i = 3;
if (!acpi_battery_present(battery))
return 0;
+
+ while (i-- > 0) {
+ msleep(3000);
mutex_lock(&battery->lock);
status = acpi_evaluate_object(battery->device->handle, name,
NULL, &buffer);
@@ -441,6 +446,7 @@ static int acpi_battery_get_info(struct acpi_battery
*battery)
ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s", name));
return -ENODEV;
}
+ }
if (test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags))
result = extract_package(battery, buffer.pointer,
extended_info_offsets,
--
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