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-rw-r--r--arch/i386/kernel/acpi/boot.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index b7808a89d945..55c0fbd68956 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -484,7 +484,11 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
return 0;
}
-unsigned int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
{
unsigned int irq;
unsigned int plat_gsi = gsi;