From: Sebastian Krzyszkowiak sebastian.krzyszkowiak@puri.sm
commit 0cf48167b87e388fa1268c9fe6d2443ae7f43d8a upstream.
The gauge requires us to clear the status bits manually for some alerts to be properly dismissed. Previously the IRQ was configured to react only on falling edge, which wasn't technically correct (the ALRT line is active low), but it had a happy side-effect of preventing interrupt storms on uncleared alerts from happening.
Fixes: 7fbf6b731bca ("power: supply: max17042: Do not enforce (incorrect) interrupt trigger type") Cc: stable@vger.kernel.org Signed-off-by: Sebastian Krzyszkowiak sebastian.krzyszkowiak@puri.sm Reviewed-by: Krzysztof Kozlowski krzysztof.kozlowski@canonical.com Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/power/supply/max17042_battery.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/power/supply/max17042_battery.c +++ b/drivers/power/supply/max17042_battery.c @@ -875,6 +875,10 @@ static irqreturn_t max17042_thread_handl max17042_set_soc_threshold(chip, 1); }
+ /* we implicitly handle all alerts via power_supply_changed */ + regmap_clear_bits(chip->regmap, MAX17042_STATUS, + 0xFFFF & ~(STATUS_POR_BIT | STATUS_BST_BIT)); + power_supply_changed(chip->battery); return IRQ_HANDLED; }