irqchip/stm32-exti: Fix irq_set_affinity return value

When there is no parent, there is no specific action to do in
stm32-exti irqchip. In such case, it's incorrect returning an
error.

Let irq_set_affinity to return IRQ_SET_MASK_OK_DONE when there is
no parent.

Signed-off-by: Ludovic Barre <ludovic.barre@foss.st.com>
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220606162757.415354-2-antonio.borneo@foss.st.com

diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index 9d18f47..10c9c74 100644 (file)
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/irqchip/irq-stm32-exti.c
@@ -614,7 +614,7 @@ static int stm32_exti_h_set_affinity(struct irq_data *d,
        if (d->parent_data->chip)
                return irq_chip_set_affinity_parent(d, dest, force);
 
-       return -EINVAL;
+       return IRQ_SET_MASK_OK_DONE;
 }
 
 static int __maybe_unused stm32_exti_h_suspend(void)