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| author | Shunyong Yang <shunyong.yang@hxt-semitech.com> | 2018-07-18 09:40:35 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-07-31 18:04:55 -0500 |
| commit | 546c596cf5491fda1516536e049c6a36836eb884 (patch) | |
| tree | 3f0d685c526147e67a17ffda1e8543ce7355f819 /include | |
| parent | f7368a550275ee56da70fd4d603d5a3eb4b614e9 (diff) | |
| download | linux-546c596cf5491fda1516536e049c6a36836eb884.tar.gz linux-546c596cf5491fda1516536e049c6a36836eb884.tar.bz2 linux-546c596cf5491fda1516536e049c6a36836eb884.zip | |
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/dma-direction.h | 6 | ||||
| -rw-r--r-- | include/linux/pci-dma-compat.h | 8 |
2 files changed, 6 insertions, 8 deletions
diff --git a/include/linux/dma-direction.h b/include/linux/dma-direction.h index 3649a031893a..9c96e30e6a0b 100644 --- a/include/linux/dma-direction.h +++ b/include/linux/dma-direction.h @@ -1,14 +1,12 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_DMA_DIRECTION_H #define _LINUX_DMA_DIRECTION_H -/* - * These definitions mirror those in pci.h, so they can be used - * interchangeably with their PCI_ counterparts. - */ + enum dma_data_direction { DMA_BIDIRECTIONAL = 0, DMA_TO_DEVICE = 1, DMA_FROM_DEVICE = 2, DMA_NONE = 3, }; + #endif 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, |