This is a note to let you know that I've just added the patch titled ACPI: battery: Accept charges over the design capacity as full to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: acpi-battery-accept-charges-over-the-design-capacity.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 31c394e3c92fbc6d8e44bcb1be9be8129acd85b8 Author: André Almeida <andrealmeid@xxxxxxxxxxxxx> Date: Fri Oct 8 00:05:29 2021 -0300 ACPI: battery: Accept charges over the design capacity as full [ Upstream commit 2835f327bd1240508db2c89fe94a056faa53c49a ] Some buggy firmware and/or brand new batteries can support a charge that's slightly over the reported design capacity. In such cases, the kernel will report to userspace that the charging state of the battery is "Unknown", when in reality the battery charge is "Full", at least from the design capacity point of view. Make the fallback condition accepts capacities over the designed capacity so userspace knows that is full. Signed-off-by: André Almeida <andrealmeid@xxxxxxxxxxxxx> Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx> Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 674a0e92b798f..0bbf8b453ebf2 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -198,7 +198,7 @@ static int acpi_battery_is_charged(struct acpi_battery *battery) return 1; /* fallback to using design values for broken batteries */ - if (battery->design_capacity == battery->capacity_now) + if (battery->design_capacity <= battery->capacity_now) return 1; /* we don't do any sort of metric based on percentages */