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-rw-r--r--include/linux/highmem.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 85ce7ef9a51..42620e723ab 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -29,6 +29,7 @@ unsigned int nr_free_highpages(void);
static inline unsigned int nr_free_highpages(void) { return 0; }
+#ifndef ARCH_HAS_KMAP
static inline void *kmap(struct page *page)
{
might_sleep();
@@ -41,6 +42,7 @@ static inline void *kmap(struct page *page)
#define kunmap_atomic(addr, idx) do { } while (0)
#define kmap_atomic_pfn(pfn, idx) page_address(pfn_to_page(pfn))
#define kmap_atomic_to_page(ptr) virt_to_page(ptr)
+#endif
#endif /* CONFIG_HIGHMEM */