Re: [PATCH 06/12] genirq: Introduce irq_chip_get/set_parent_state calls

[Stephen Boyd]

Quoting Lina Iyer (2019-11-14 10:35:15)
> From: Maulik Shah <mkshah@xxxxxxxxxxxxxx>
> 
> On certain QTI chipsets some GPIOs are direct-connect interrupts to the
> GIC to be used as regular interrupt lines. When the GPIOs are not used
> for interrupt generation the interrupt line is disabled. But disabling
> the interrupt at GIC does not prevent the interrupt to be reported as
> pending at GIC_ISPEND. Later, when drivers call enable_irq() on the
> interrupt, an unwanted interrupt occurs.
> 
> Introduce get and set methods for irqchip's parent to clear it's pending
> irq state. This then can be invoked by the GPIO interrupt controller on
> the parents in it hierarchy to clear the interrupt before enabling the
> interrupt.
> 
> Signed-off-by: Maulik Shah <mkshah@xxxxxxxxxxxxxx>
> [updated commit text and minor code fixes]
> Signed-off-by: Lina Iyer <ilina@xxxxxxxxxxxxxx>
> ---

Reviewed-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>