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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: 7fbf6b731b ("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>
This commit is contained in:
Sebastian Krzyszkowiak 2021-09-14 14:18:05 +02:00 committed by Sebastian Reichel
parent 7462a894bd
commit 0cf48167b8
1 changed files with 4 additions and 0 deletions
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4
drivers/power/supply/max17042_battery.c
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@ -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;
}