Commit ab363b37 authored Oct 08, 2021 by André Almeida Committed by Greg Kroah-Hartman Nov 26, 2021

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@collabora.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent c677ab78

drivers/acpi/battery.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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 */