diff --git a/arch/unicore32/include/asm/pci.h b/arch/unicore32/include/asm/pci.h
index a51290862acd..ac5acdf4c4d0 100644
--- a/arch/unicore32/include/asm/pci.h
+++ b/arch/unicore32/include/asm/pci.h
@@ -17,6 +17,7 @@
 #include <mach/hardware.h> /* for PCIBIOS_MIN_* */
 
 #define HAVE_PCI_MMAP
+#define ARCH_GENERIC_PCI_MMAP_RESOURCE
 
 #endif /* __KERNEL__ */
 #endif
diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c
index 1b438857e91f..1053bca1f8aa 100644
--- a/arch/unicore32/kernel/pci.c
+++ b/arch/unicore32/kernel/pci.c
@@ -356,27 +356,3 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 	}
 	return 0;
 }
-
-int pci_mmap_page_range(struct pci_dev *dev, int bar,
-			struct vm_area_struct *vma,
-			enum pci_mmap_state mmap_state, int write_combine)
-{
-	unsigned long phys;
-
-	if (mmap_state == pci_mmap_io)
-		return -EINVAL;
-
-	phys = vma->vm_pgoff;
-
-	/*
-	 * Mark this as IO
-	 */
-	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
-	if (remap_pfn_range(vma, vma->vm_start, phys,
-			     vma->vm_end - vma->vm_start,
-			     vma->vm_page_prot))
-		return -EAGAIN;
-
-	return 0;
-}