The byt_irq_type function ends with the IRQ masked, this means that calls to irq_set_irq_type() while the IRQ is enabled end up masking it, which is wrong. Add the IRQCHIP_SET_TYPE_MASKED flag to fix this. This will make the IRQ core call mask() + unmask() on the IRQ around a set_type() call when the IRQ is enabled at the type of the call. Note in practice irq_set_irq_type() getting called while the IRQ is enabled almost never happens. I hit this with a buggy DSDT where a wrongly active (_STA returns 0xf) I2C ACPI devices point to an IRQ already in use by an _AEI handler, leading to the irq_set_irq_type() call in acpi_dev_gpio_irq_get_by() getting called while the IRQ is enabled. Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> --- drivers/pinctrl/intel/pinctrl-baytrail.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c index 744ebe417bff..e3dd105e2f6e 100644 --- a/drivers/pinctrl/intel/pinctrl-baytrail.c +++ b/drivers/pinctrl/intel/pinctrl-baytrail.c @@ -1554,7 +1554,8 @@ static int byt_gpio_probe(struct intel_pinctrl *vg) vg->irqchip.irq_mask = byt_irq_mask, vg->irqchip.irq_unmask = byt_irq_unmask, vg->irqchip.irq_set_type = byt_irq_type, - vg->irqchip.flags = IRQCHIP_SKIP_SET_WAKE, + vg->irqchip.flags = IRQCHIP_SKIP_SET_WAKE | + IRQCHIP_SET_TYPE_MASKED, girq = &gc->irq; girq->chip = &vg->irqchip; -- 2.33.1
