From 07ac84eaaa5daeae4a56ff70649a3e50fc470db5 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Sat, 7 May 2016 07:46:13 -0700 Subject: [PATCH] x86: irq: Reserve IRQ9 for ACPI in PIC mode Reserve IRQ9 which is to be used as SCI interrupt number for ACPI in PIC mode. Signed-off-by: Bin Meng Reviewed-by: Stefan Roese Tested-by: Stefan Roese Reviewed-by: Simon Glass --- arch/x86/cpu/irq.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/cpu/irq.c b/arch/x86/cpu/irq.c index 2950783055..7586fc2b0c 100644 --- a/arch/x86/cpu/irq.c +++ b/arch/x86/cpu/irq.c @@ -121,6 +121,11 @@ static int create_pirq_routing_table(struct udevice *dev) priv->irq_mask = fdtdec_get_int(blob, node, "intel,pirq-mask", PIRQ_BITMAP); + if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE)) { + /* Reserve IRQ9 for SCI */ + priv->irq_mask &= ~(1 << 9); + } + if (priv->config == PIRQ_VIA_IBASE) { int ibase_off; -- 2.39.5