From 07c817b8abc53b86c58171fe1f706acf466828f7 Mon Sep 17 00:00:00 2001 From: Sebastian Krzyszkowiak Date: Tue, 14 Sep 2021 14:18:05 +0200 Subject: [PATCH 09/10] power: supply: max17042_battery: Clear status bits in interrupt handler 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: Signed-off-by: Sebastian Krzyszkowiak Reviewed-by: Krzysztof Kozlowski --- drivers/power/supply/max17042_battery.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c index 5809ba997093..7cfbca28e703 100644 --- a/drivers/power/supply/max17042_battery.c +++ b/drivers/power/supply/max17042_battery.c @@ -879,6 +879,10 @@ static irqreturn_t max17042_thread_handler(int id, void *dev) 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; } -- 2.33.0