diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 1728cb9bf600..d2ff4325c427 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -49,7 +49,7 @@
 ACPI_MODULE_NAME("tbfadt")
 
 /* Local prototypes */
-static inline void
+static ACPI_INLINE void
 acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
 			     u8 space_id, u8 byte_width, u64 address);
 
@@ -181,7 +181,7 @@ static struct acpi_fadt_pm_info fadt_pm_info_table[] = {
  *
  ******************************************************************************/
 
-static inline void
+static ACPI_INLINE void
 acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
 			     u8 space_id, u8 byte_width, u64 address)
 {
diff --git a/include/acpi/platform/acenv.h b/include/acpi/platform/acenv.h
index c05aeba9e8f0..a3e334ab1119 100644
--- a/include/acpi/platform/acenv.h
+++ b/include/acpi/platform/acenv.h
@@ -193,6 +193,12 @@
 #define ACPI_MUTEX_TYPE             ACPI_BINARY_SEMAPHORE
 #endif
 
+/* "inline" keywords - configurable since inline is not standardized */
+
+#ifndef ACPI_INLINE
+#define ACPI_INLINE
+#endif
+
 /*
  * Debugger threading model
  * Use single threaded if the entire subsystem is contained in an application
diff --git a/include/acpi/platform/acgcc.h b/include/acpi/platform/acgcc.h
index 0cd53e3cd1a3..5dcb9537343c 100644
--- a/include/acpi/platform/acgcc.h
+++ b/include/acpi/platform/acgcc.h
@@ -44,6 +44,8 @@
 #ifndef __ACGCC_H__
 #define __ACGCC_H__
 
+#define ACPI_INLINE             __inline__
+
 /* Function name is used for debug output. Non-ANSI, compiler-dependent */
 
 #define ACPI_GET_FUNCTION_NAME          __func__