diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index a91f1d94f9e5..9dadb9a1db2a 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -65,7 +65,6 @@
 #include <asm/numa.h>
 #include <asm/swiotlb.h>
 #include <asm/sections.h>
-#include <asm/gart-mapping.h>
 #include <asm/dmi.h>
 
 /*
diff --git a/include/asm-x86_64/gart-mapping.h b/include/asm-x86_64/gart-mapping.h
deleted file mode 100644
index ada497b0b55b..000000000000
--- a/include/asm-x86_64/gart-mapping.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef _X8664_GART_MAPPING_H
-#define _X8664_GART_MAPPING_H 1
-
-#include <linux/types.h>
-#include <asm/types.h>
-
-struct device;
-
-extern void*
-gart_alloc_coherent(struct device *dev, size_t size,
-        dma_addr_t *dma_handle, gfp_t gfp);
-
-extern int
-gart_dma_supported(struct device *hwdev, u64 mask);
-
-#endif /* _X8664_GART_MAPPING_H */