From: Andreas Kemnade <andreas@kemnade.info> stable inclusion from stable-5.10.50 commit d22bef41017b4edfb0111c30f8bc476c17b5d720 bugzilla: 174522 https://gitee.com/openeuler/kernel/issues/I4DNFY Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit a1649a5260631979c68e5b2012f60f90300e646f ] During more massive generation of interrupts, the IRQ got stuck, and the subdevices did not see any new interrupts. That happens especially at wonky USB supply in combination with ADC reads. To fix that trigger the IRQ at level low instead of falling edge. Fixes: 0c81604516af ("mfd: rn5t618: Add IRQ support") Signed-off-by: Andreas Kemnade <andreas@kemnade.info> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> --- drivers/mfd/rn5t618.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c index dc452df1f1bf..652a5e60067f 100644 --- a/drivers/mfd/rn5t618.c +++ b/drivers/mfd/rn5t618.c @@ -104,7 +104,7 @@ static int rn5t618_irq_init(struct rn5t618 *rn5t618) ret = devm_regmap_add_irq_chip(rn5t618->dev, rn5t618->regmap, rn5t618->irq, - IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, 0, irq_chip, &rn5t618->irq_data); if (ret) dev_err(rn5t618->dev, "Failed to register IRQ chip\n"); -- 2.20.1