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-rw-r--r--include/asm-arm/memory.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-arm/memory.h b/include/asm-arm/memory.h
index afa5c3ea077..2b3cf69b3ed 100644
--- a/include/asm-arm/memory.h
+++ b/include/asm-arm/memory.h
@@ -234,6 +234,14 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
#define virt_to_dma(dev, addr) (__arch_virt_to_dma(dev, addr))
#endif
+/*
+ * Optional coherency support. Currently used only by selected
+ * Intel XSC3-based systems.
+ */
+#ifndef arch_is_coherent
+#define arch_is_coherent() 0
+#endif
+
#endif
#include <asm-generic/memory_model.h>