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ACPI: battery: Accept charges over the design capacity as full

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[ Upstream commit 2835f327bd ]

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>
This commit is contained in:
André Almeida
2021-10-08 00:05:29 -03:00
committed by Greg Kroah-Hartman
parent b600866018
commit 65c84e09e8
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/battery.c
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@@ -174,7 +174,7 @@ 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 */