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-rw-r--r--include/acpi/platform/acgcc.h4
-rw-r--r--include/acpi/platform/aclinux.h2
2 files changed, 6 insertions, 0 deletions
diff --git a/include/acpi/platform/acgcc.h b/include/acpi/platform/acgcc.h
index 97a7e21cfbe0..9c8f8b79644e 100644
--- a/include/acpi/platform/acgcc.h
+++ b/include/acpi/platform/acgcc.h
@@ -84,4 +84,8 @@ typedef __builtin_va_list va_list;
#define COMPILER_VA_MACRO 1
+/* GCC supports native multiply/shift on 32-bit platforms */
+
+#define ACPI_USE_NATIVE_MATH64
+
#endif /* __ACGCC_H__ */
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index afd95f28c8f0..1b473efd9eb6 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -128,6 +128,7 @@
/* Host-dependent types and defines for in-kernel ACPICA */
#define ACPI_MACHINE_WIDTH BITS_PER_LONG
+#define ACPI_USE_NATIVE_MATH64
#define ACPI_EXPORT_SYMBOL(symbol) EXPORT_SYMBOL(symbol);
#define strtoul simple_strtoul
@@ -216,6 +217,7 @@
#define COMPILER_DEPENDENT_INT64 long long
#define COMPILER_DEPENDENT_UINT64 unsigned long long
#define ACPI_USE_NATIVE_DIVIDE
+#define ACPI_USE_NATIVE_MATH64
#endif
#ifndef __cdecl
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