dma-mapping: remove the DMA_ATTR_WRITE_BARRIER flag

[tomoyo/tomoyo-test1.git] / include / linux / dma-mapping.h

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 4a1c4fc..8023071 100644 (file)
--- 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.