[PATCH] LoongArch: Increase MAX_IO_PICS up to 8

From: Huacai Chen
Date: Thu Mar 27 2025 - 06:16:39 EST


Begin with Loongson-3C6000, the number of PCI host can be as many as
8 for multi-chip machines, and this number should be the same for I/O
interrupt controllers. To support these machines we also increase the
MAX_IO_PICS up to 8.

Cc: stable@xxxxxxxxxxxxxxx
Tested-by: Mingcong Bai <baimingcong@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
arch/loongarch/include/asm/irq.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/loongarch/include/asm/irq.h b/arch/loongarch/include/asm/irq.h
index a0ca84da8541..12bd15578c33 100644
--- a/arch/loongarch/include/asm/irq.h
+++ b/arch/loongarch/include/asm/irq.h
@@ -53,7 +53,7 @@ void spurious_interrupt(void);
#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
void arch_trigger_cpumask_backtrace(const struct cpumask *mask, int exclude_cpu);

-#define MAX_IO_PICS 2
+#define MAX_IO_PICS 8
#define NR_IRQS (64 + NR_VECTORS * (NR_CPUS + MAX_IO_PICS))

struct acpi_vector_group {
--
2.47.1