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 5.4-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-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 00a94e24f6c814d511ca9f5e0ca3a1202062fcf0 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 254a7d98b9d4c..6e96ed68b3379 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -185,7 +185,7 @@ 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 */