diff options
| author | Bjørn Mork <bjorn@mork.no> | 2014-09-09 10:45:17 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-09-09 16:19:03 +0200 |
| commit | 583ee394ac503ff9eac0f50673cd569643bdb3b4 (patch) | |
| tree | da797d7a3f811846eeaf1b18dc064224f8d66766 | |
| parent | 2ce7598c9a453e0acd0e07be7be3f5eb39608ebd (diff) | |
Revert "ACPI / battery: Fix warning message in acpi_battery_get_state()"
This reverts commit d719870b41e0 ("ACPI / battery: Fix warning message in
acpi_battery_get_state()")
Capping 'capacity_now' to 'full_charge_capacity' is plain wrong. If this
is necessary to work around some buggy firmware, then the workaround needs
protection against being applied to working firmwares.
Good battery firmwares will allow 'capacity_now' to increase above
'full_charge_capacity', and will update the latter when the battery
is fully charged. By capping 'capacity_now' we lose accurate capacity
reporting until charging is complete whenever 'full_charge_capacity'
needs to be increased.
Fixes: d719870b41e0 ("ACPI / battery: Fix warning message in acpi_battery_get_state()")
Cc: 3.16+ <stable@vger.kernel.org> # 3.16+
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/battery.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 1c162e7be045..48bcf38a0ea8 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -540,12 +540,12 @@ static int acpi_battery_get_state(struct acpi_battery *battery) */ if (battery->capacity_now > battery->full_charge_capacity && battery->full_charge_capacity != ACPI_BATTERY_VALUE_UNKNOWN) { + battery->capacity_now = battery->full_charge_capacity; if (battery->capacity_now != battery->design_capacity) printk_once(KERN_WARNING FW_BUG "battery: reported current charge level (%d) " "is higher than reported maximum charge level (%d).\n", battery->capacity_now, battery->full_charge_capacity); - battery->capacity_now = battery->full_charge_capacity; } if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags) |