From a84be2baa9eca8bc500f866ad943b8f63dc99adf Mon Sep 17 00:00:00 2001 From: Sergey Makarov Date: Wed, 18 Sep 2024 17:02:29 +0300 Subject: [PATCH] hw/intc: Don't clear pending bits on IRQ lowering According to PLIC specification (chapter 5), there is only one case, when interrupt is claimed. Fix PLIC controller to match this behavior. Signed-off-by: Sergey Makarov Reviewed-by: Alistair Francis Message-ID: <20240918140229.124329-3-s.makarov@syntacore.com> Signed-off-by: Alistair Francis --- hw/intc/sifive_plic.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/hw/intc/sifive_plic.c b/hw/intc/sifive_plic.c index 8de3a654bc..ed74490dba 100644 --- a/hw/intc/sifive_plic.c +++ b/hw/intc/sifive_plic.c @@ -354,8 +354,10 @@ static void sifive_plic_irq_request(void *opaque, int irq, int level) { SiFivePLICState *s = opaque; - sifive_plic_set_pending(s, irq, level > 0); - sifive_plic_update(s); + if (level > 0) { + sifive_plic_set_pending(s, irq, true); + sifive_plic_update(s); + } } static void sifive_plic_realize(DeviceState *dev, Error **errp)