Re: [PATCH 16/23] gpio: nomadik: support shared GPIO IRQs

Bartosz Golaszewski
2024-02-19T15:48:15Z

On Wed, Feb 14, 2024 at 5:24 PM Théo Lebrun <theo.lebrun@bootlin.com> wrote:
>
> Support a single IRQs used by multiple GPIO banks. Change the IRQ
> handler type from a chained handler (as used by gpiolib
> for ->parent_handler) to a threaded IRQ.
>
> Use a fake raw spinlock to ensure generic_handle_irq() is called in a
> no-irq context. See Documentation/driver-api/gpio/driver.rst, "CHAINED
> CASCADED GPIO IRQCHIPS" for additional information.
>

Any reason for not using preempt_disable()?

Bart

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