Messages in this thread Patch in this message | | | From | Jan Vcelak <> | Subject | [PATCH] ACPI: full battery charge cannot exceed current one | Date | Sat, 7 Dec 2013 13:36:41 +0100 |
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Some degraded batteries report maximal capacity to be smaller than current charge of the battery. This can confuse some user space applications (like upower).
This patch handles the situation by increasing maximal capacity of the battery if it exceedes current charge.
Signed-off-by: Jan Vcelak <jan.vcelak@nic.cz> ---
upower: fully charged battery reported as 0% charged https://bugzilla.redhat.com/show_bug.cgi?id=1025980
drivers/acpi/battery.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index fbf1ace..71ec1f6 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -494,6 +494,11 @@ static int acpi_battery_get_state(struct acpi_battery *battery) battery->capacity_now = battery->capacity_now * 10000 / battery->design_voltage; } + + /* Some degraded batteries report lower full charge than current one. */ + if (battery->capacity_now > battery->full_charge_capacity) + battery->full_charge_capacity = battery->capacity_now; + return result; } -- 1.8.4.2
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