1 files changed, 2 insertions, 0 deletions

diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 277d35bced03..3f853cabbd41 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -58,11 +58,13 @@
 #include <asm/div64.h>
 #include <asm/acpi.h>
 #include <linux/slab.h>
+#include <linux/spinlock_types.h>
 
 /* Host-dependent types and defines */
 
 #define ACPI_MACHINE_WIDTH          BITS_PER_LONG
 #define acpi_cache_t                        kmem_cache_t
+#define acpi_spinlock                   spinlock_t *
 #define ACPI_EXPORT_SYMBOL(symbol)  EXPORT_SYMBOL(symbol);
 #define strtoul                     simple_strtoul