When a GIC local interrupt is not routable, it's vl_map will be used
to control some internal states for core (providing IPTI, IPPCI, IPFDC
input signal for core). Overriding it will interfere core's intetrupt
controller.
Do not touch vl_map if a local interrupt is not routable, we are not
going to remap it.
Before dd098a0e0319 (" irqchip/mips-gic: Get rid of the reliance on
irq_cpu_online()"), if a local interrupt is not routable, then it won't
be requested from GIC Local domain, and thus gic_all_vpes_irq_cpu_online
won't be called for that particular interrupt.
Fixes: dd098a0e0319 (" irqchip/mips-gic: Get rid of the reliance on irq_cpu_online()")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
---
drivers/irqchip/irq-mips-gic.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c
index 046c355e120b..b568d55ef7c5 100644
--- a/drivers/irqchip/irq-mips-gic.c
+++ b/drivers/irqchip/irq-mips-gic.c
@@ -399,6 +399,8 @@ static void gic_all_vpes_irq_cpu_online(void)
unsigned int intr = local_intrs[i];
struct gic_all_vpes_chip_data *cd;
+ if (!gic_local_irq_is_routable(intr))
+ continue;
cd = &gic_all_vpes_chip_data[intr];
write_gic_vl_map(mips_gic_vx_map_reg(intr), cd->map);
if (cd->mask)
--
2.34.1
