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-rw-r--r--src/arch/x86/include/arch/acpi.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/arch/x86/include/arch/acpi.h b/src/arch/x86/include/arch/acpi.h
index 21dae088d2..a30c5f105c 100644
--- a/src/arch/x86/include/arch/acpi.h
+++ b/src/arch/x86/include/arch/acpi.h
@@ -606,7 +606,7 @@ void acpi_create_slit(acpi_slit_t *slit,
void acpi_create_ivrs(acpi_ivrs_t *ivrs,
unsigned long (*acpi_fill_ivrs)(acpi_ivrs_t* ivrs_struct, unsigned long current));
-#if ENV_RAMSTAGE
+#if ENV_RAMSTAGE && !defined(__SIMPLE_DEVICE__)
void acpi_create_hpet(acpi_hpet_t *hpet);
unsigned long acpi_write_hpet(device_t device, unsigned long start, acpi_rsdp_t *rsdp);