[PULL v3 18/20] hw/intc: ibex_plic: Update the pending irqs

[Alistair Francis]

After a claim or a priority change we need to update the pending
interrupts. This is based on the same patch for the SiFive PLIC:
55765822804f5a58594e "riscv: plic: Add a couple of mising
sifive_plic_update calls"

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Cc: Jessica Clarke <jrtc27@jrtc27.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: 
<0693aa700a4c67c49b3f1c973a82b257fdb7198d.1595655188.git.alistair.francis@wdc.com>
---
 hw/intc/ibex_plic.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/intc/ibex_plic.c b/hw/intc/ibex_plic.c
index 41079518c6..578edd2ce0 100644
--- a/hw/intc/ibex_plic.c
+++ b/hw/intc/ibex_plic.c
@@ -121,6 +121,9 @@ static uint64_t ibex_plic_read(void *opaque, hwaddr addr,
         s->pending[pending_num] &= ~(1 << (s->claim % 32));
 
         ret = s->claim;
+
+        /* Update the interrupt status after the claim */
+        ibex_plic_update(s);
     }
 
     return ret;
@@ -140,6 +143,7 @@ static void ibex_plic_write(void *opaque, hwaddr addr,
     } else if (addr_between(addr, s->priority_base, s->priority_num)) {
         uint32_t irq = ((addr - s->priority_base) >> 2) + 1;
         s->priority[irq] = value & 7;
+        ibex_plic_update(s);
     } else if (addr_between(addr, s->enable_base, s->enable_num)) {
         uint32_t enable_reg = (addr - s->enable_base) / 4;
 
-- 
2.28.0