PCI: Unify PCI and normal DMA direction definitions

Current DMA direction definitions in pci-dma-compat.h and dma-direction.h
are mirrored in value.  Unify them to enhance readability and avoid
possible inconsistency.

Signed-off-by: Shunyong Yang <shunyong.yang@hxt-semitech.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Joey Zheng <yu.zheng@hxt-semitech.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/include/linux/pci-dma-compat.h b/include/linux/pci-dma-compat.h
index 0dd1a3f7b309..c3f1b44ade29 100644
--- a/include/linux/pci-dma-compat.h
+++ b/include/linux/pci-dma-compat.h
@@ -8,10 +8,10 @@
 #include <linux/dma-mapping.h>
 
 /* This defines the direction arg to the DMA mapping routines. */
-#define PCI_DMA_BIDIRECTIONAL   0
-#define PCI_DMA_TODEVICE        1
-#define PCI_DMA_FROMDEVICE      2
-#define PCI_DMA_NONE            3
+#define PCI_DMA_BIDIRECTIONAL   DMA_BIDIRECTIONAL
+#define PCI_DMA_TODEVICE        DMA_TO_DEVICE
+#define PCI_DMA_FROMDEVICE      DMA_FROM_DEVICE
+#define PCI_DMA_NONE            DMA_NONE
 
 static inline void *
 pci_alloc_consistent(struct pci_dev *hwdev, size_t size,