[RFC PATCH] irqchip/sifive-plic: Fix getting wrong chip_data when interrupt is hierarchy

[Marc Zyngier]

On Thu, 29 Oct 2020 10:37:38 +0800, Greentime Hu wrote:
> This oops is caused by a wrong chip_data and it is because plic_irq_unmask
> uses irq_get_chip_data(irq_data->irq) to get the chip_data. However it may
> get another irq_data with the same irq_data->irq if it is hierarchy.
> 
> In this case, it will get irq_data of sifive_gpio_irqchip instead of
> plic_chip so that it will get a wrong chip_data and then the wrong lmask
> of it to cause this oops.
> 
> [...]

Applied to irq/irqchip-next, thanks!

[1/1] irqchip/sifive-plic: Fix chip_data access within a hierarchy
      commit: f9ac7bbd6e4540dcc6df621b9c9b6eb2e26ded1d

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.