Sampling the IRQ line state in EOI and retriggering the interrupt to work around missing level-triggered interrupt support only works for non-threaded interrupts. Threaded interrupts must be retriggered the same way in unmask callback. Signed-off-by: Marek Vasut <marex@xxxxxxx> Cc: Alexandre Torgue <alexandre.torgue@xxxxxx> Cc: Jason Cooper <jason@xxxxxxxxxxxxxx> Cc: Linus Walleij <linus.walleij@xxxxxxxxxx> Cc: Marc Zyngier <maz@xxxxxxxxxx>, Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: linux-gpio@xxxxxxxxxxxxxxx To: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx --- drivers/pinctrl/stm32/pinctrl-stm32.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c index 9ac9ecfc2f34..2dd4a4dd944c 100644 --- a/drivers/pinctrl/stm32/pinctrl-stm32.c +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c @@ -304,18 +304,22 @@ static const struct gpio_chip stm32_gpio_template = { .get_direction = stm32_gpio_get_direction, }; -void stm32_gpio_irq_eoi(struct irq_data *d) +static void stm32_gpio_irq_trigger(struct irq_data *d) { struct stm32_gpio_bank *bank = d->domain->host_data; int level; - irq_chip_eoi_parent(d); - /* If level interrupt type then retrig */ level = stm32_gpio_get(&bank->gpio_chip, d->hwirq); if ((level == 0 && bank->irq_type[d->hwirq] == IRQ_TYPE_LEVEL_LOW) || (level == 1 && bank->irq_type[d->hwirq] == IRQ_TYPE_LEVEL_HIGH)) irq_chip_retrigger_hierarchy(d); +} + +void stm32_gpio_irq_eoi(struct irq_data *d) +{ + irq_chip_eoi_parent(d); + stm32_gpio_irq_trigger(d); }; static int stm32_gpio_set_type(struct irq_data *d, unsigned int type) @@ -371,12 +375,18 @@ static void stm32_gpio_irq_release_resources(struct irq_data *irq_data) gpiochip_unlock_as_irq(&bank->gpio_chip, irq_data->hwirq); } +static void stm32_gpio_irq_unmask(struct irq_data *d) +{ + irq_chip_unmask_parent(d); + stm32_gpio_irq_trigger(d); +} + static struct irq_chip stm32_gpio_irq_chip = { .name = "stm32gpio", .irq_eoi = stm32_gpio_irq_eoi, .irq_ack = irq_chip_ack_parent, .irq_mask = irq_chip_mask_parent, - .irq_unmask = irq_chip_unmask_parent, + .irq_unmask = stm32_gpio_irq_unmask, .irq_set_type = stm32_gpio_set_type, .irq_set_wake = irq_chip_set_wake_parent, .irq_request_resources = stm32_gpio_irq_request_resources, -- 2.25.1