/**
* 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.