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Per PCA945[X] specification: The IRQ_B pin is pulled low when any unmasked interrupt bit status is changed and it is released high once application processor read INT1 register. So the interrupt should be configured as IRQF_TRIGGER_LOW, not IRQF_TRIGGER_FALLING. Fixes: 0935ff5f1f0a4 ("regulator: pca9450: add pca9450 pmic driver") Signed-off-by: Peng Fan --- drivers/regulator/pca9450-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9= 450-regulator.c index 5fa8682642505ab01736a9fb1ef8761d77ef6b2d..2205f6de37e7d4eb8a0abf7deeb= f319395a2bc75 100644 --- a/drivers/regulator/pca9450-regulator.c +++ b/drivers/regulator/pca9450-regulator.c @@ -1369,7 +1369,7 @@ static int pca9450_i2c_probe(struct i2c_client *i2c) if (pca9450->irq) { ret =3D devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL, pca9450_irq_handler, - (IRQF_TRIGGER_FALLING | IRQF_ONESHOT), + (IRQF_TRIGGER_LOW | IRQF_ONESHOT), "pca9450-irq", pca9450); if (ret !=3D 0) return dev_err_probe(pca9450->dev, ret, "Failed to request IRQ: %d\n", --=20 2.37.1