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-rw-r--r--arch/i386/kernel/mpparse.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index af917f609c7d..ce838abb27d8 100644
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -1116,7 +1116,15 @@ int mp_register_gsi (u32 gsi, int edge_level, int active_high_low)
*/
int irq = gsi;
if (gsi < MAX_GSI_NUM) {
- gsi = pci_irq++;
+ if (gsi > 15)
+ gsi = pci_irq++;
+#ifdef CONFIG_ACPI_BUS
+ /*
+ * Don't assign IRQ used by ACPI SCI
+ */
+ if (gsi == acpi_fadt.sci_int)
+ gsi = pci_irq++;
+#endif
gsi_to_irq[irq] = gsi;
} else {
printk(KERN_ERR "GSI %u is too high\n", gsi);
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