irqchip/sifive-plic: Fix T-HEAD PLIC edge trigger handling

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The T-HEAD PLIC ignores additional edges seen while an edge-triggered
interrupt is being handled. Because of this behavior, the driver needs
to complete edge-triggered interrupts in the .irq_ack callback before
handling them, instead of in the .irq_eoi callback afterward. Otherwise,
it could miss some interrupts.

Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220630100241.35233-5-samuel@sholland.org

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Samuel Holland 2022-06-30 05:02:41 -05:00 • committed by Marc Zyngier

parent d60df7fd22

commit 5873ba5591

1 changed files with 1 additions and 1 deletions

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drivers/irqchip/irq-sifive-plic.c

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