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-rw-r--r--include/linux/dma-mapping.h5
1 files changed, 1 insertions, 4 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 4a1c4fca475a..8023071d6903 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -15,11 +15,8 @@
/**
* List of possible attributes associated with a DMA mapping. The semantics
* of each attribute should be defined in Documentation/DMA-attributes.txt.
- *
- * DMA_ATTR_WRITE_BARRIER: DMA to a memory region with this attribute
- * forces all pending DMA writes to complete.
*/
-#define DMA_ATTR_WRITE_BARRIER (1UL << 0)
+
/*
* DMA_ATTR_WEAK_ORDERING: Specifies that reads and writes to the mapping
* may be weakly ordered, that is that reads and writes may pass each other.